___ _ make progress, she has been studying hard.
If you can make what the teachers teach ________, you’ll make rapid progress.
_______ has recently been done to provide more buses for the people, a shortage of public vehicles remains a serious problem.
When a giraffe has ______ drink, it has to stand with its front legs wide apart in order to reach ______ water easily.
If we ___________some measures, we might have prevented the environmental pollution.
–May I smoke in the room? --No, you______________. It’s a non-smoking room..