1：This yogurt comes in ten different ___. A：flavors B：taste C：smells D：odors ...

20：That is _____ we decided to put the discussion off. A：where B：which C：that D：why ...

14：Usually, working as a computer programmer is ___ to a person who majors in arts. A：enjoying B：challenging C：harm D：easy ...

8：Who’s _____ the children while you’re away?. A：care for B：taking care of C：attend to D：tending to ...

2：It will be some time _____ we know the full results. A：since B： before C： until D：after ...

21：In the past men generally preferred that their wives____at home. A：worked B：would work C：to work D：work ...

15：Great efforts to increase agricultural production must be made if food shortage____avoided. A：will be B：can be C：has been D：is to be ...

9：Clark felt that his____in one of the most dramatic medical experiments of all time was worth the suffering he underwent. A：apprehension B：appreciation C：presentation D：participation ...

3：The only thing that really matters to the children is how soon they______return to their school. A：can B：must C：have to D：ought to ...

22：____several years for bamboo seeds to grow into plants that used for commercial purpose . A：It takes B：To be taken C：By taking D：Although ...