Not until ___ to do my homework ____ how much time I had wasted playing computer games. [ ]A. I began; I realized B. I began; did I realizeC. did I begin; I realized D. did I begin; did I realize

— It's nice. Never before ________ such a special drink!— I'm glad you like it. [ ]A. I have hadB. I hadC. have I hadD. had I

______, Franks never seems to be able to do the work satisfactorily. [ ]A. As hard he triesB. Try hard as he mightC. As hard as he triesD. Try as hard as he might

No sooner ____than it began to rain heavily.[ ]A. the game beganB. had the game beganC. did the game beginD. had the game begun

Not until ________ the exam ________ the importance of doing homework. [ ]A. had he failed; he realizedB. he had failed; did he realizeC. he had failed; he realizedD. had he failed; did he realize

________, they had no chance of winning the war.[ ]A. As they fought bravely B. Bravely as they foughtC. As bravely they fought D. They fought so bravely

We laugh at jokes,but seldom ________ about how they work.[ ]A. we thinkB. think weC. we do thinkD. do we think

Only when he reached the teahouse ______ it was the same place he'd been in last year.[ ]A. he realizedB. he did realizeC. realized heD. did he realize

Only when he met the girl his aunt introduced to him ____ that he had seen her before. [ ]A. he realizedB. he did realize C. realized heD. did he realize

_________ , but also they are good friends.[ ]A. Not only does he know Jim B.Not only he knows JimC. Not does he only know JimD.Does not only he knows Jim

As fuel prices rose, bus companies raised their fares and ________.[ ]A. so did the airlinesB. nor did the airlinesC. so the airlines didD. nor the airlines did

Only when ________ be possible to sign the papers.[ ]A. does the boss come will itB. the boss comes will itC. has the boss come it willD. the boss comes it will

So interested ________ in sunbathing that they often go south with their families on weekends.[ ]A. is the EnglishB. the English isC. are the EnglishD. the English are

Only by introducing scientific management, I suppose, ________ our company to a bright future and make more profits in the next years.[ ]A. can we bringB. we have broughtC. we can bringD. have we brought

Only when I left my parents for Italy ______ how much I loved them.[ ]A. I realized B. I had realized C. had I realized D.did I realize

Not until he left his home ________ to know how important the family was for him.[ ]A. did he beginB. had he begunC. he beganD. he had begun

_____ for your laziness, you could have finished the assignment by now.[ ]A. It were notB. Were not it C. Had it not beenD. Had not it been

To such an extent ______ their son that they have tried to satisfy every demand of his. [ ]A. their parents do love B. their parents loveC. do their parents love D. love their parents

So suddenly ________ that people had no time to escape. [ ]A. did the earthquake happenB. the earthquake happenedC. was the earthquake happenedD. the earthquake was happened

— Li Zhai has been watching the Korean TV series Temptation of Wife the whole night.— ________. [ ]A. So her parents haveB. So have been her parentsC. Her parents have been soD. So have her parents

We have to admit that never in the past twenty years ________ so greatly as before.[ ]A. did the city changeB. the city has changedC. has the city changedD. the city had changed

John was fired by his factory and only then ________ how wrong he was to be lazy and careless.[ ]A. had he realizedB. he had realizedC. did he realizeD. he realized

Hot ________ the night air was, we slept deeply because we were so tired after the long journey. [ ]A. although B. as C. while D. however

Only when possible to settle the problem.[ ]A. does the editor come will it beB. the editor comes will it beC. has the editor come it will be D. the editor comes it will be

Only when your identity has been checked ____________. [ ]A. you are allowed in B. you will be allowed in C. will you allow inD. will you be allowed in