Playing computer games can get ________ of his study.
--- What’s the use of this kind of fuel(燃料) ?--- It can make the train __________ fast.
---Help yourself to some chicken , Jim . ---__________________
In our class, Andy is the __________ . He always makes everybody laugh .
---The classroom is not________ clean ______it was yesterday .---Sorry, I forgot to clean it.
As(正如) the old ___________ goes, “Time waits for no man!”