单选题：I’m as busy as a bee; ________ you bother me with so many..

It's difficult for any of us to eat better, exercise more, and sleep enough,_____we know we should.A. because B. even if C. as if D. unless

We've offered her the job, but I don't know _____ she'll accept it.A. where B. what C. whether D. which

短文改错。I like watching birds. I choose this hobby years ago because I like birds and enjoy being close to the nature. Bird watching is a good hobby so it isn't very expensive. As a beginner, all you need is curiosity and a notebook. When you become c

You will be successful in the interview _____ you have confidence.A. beforeB. onceC. until D. though

–Are you available at 3 tomorrow afternoon? --Sorry, I ________ a meeting at that time.A．am havingB．will be havingC．will haveD．have