单选题：My parents were quarrelling about me ____ I could not quite ..

John plays basketball well, _____ his favorite sport is badminton.A. so B. or C. yet D. for

—Why are your eyes so red？You________have slept well last night.—Yeah，I stayed up late writing a report. (A．can’tB．mustn’tC．needn’t D．won’t

— Have you got any idea for the summer vacation? — I don't mind where we go _____there's sun, sea and beach.A. as if B. as long as C. now that D. in order that

— It’s no easy task to catch a ticket on a website that receives 1 billion clicks daily.—I can’t agree with you more.There ________ be errors for every single step.A．shouldB．mustC．willD．can

She had golden hair when she was a child, but _____ she got older and older, her hair went darker and darker.A. while B. when C. after D. as