问题描述：
1.you need to change ___ in Beijing.
A.a train B.the train C.trains D.train
2.you'd better do morning ___every day.It's good to have lots of___.
A.exercise,exercise B.exercises,exercise C.exercise,exercises D.exercises exercises
3.Please hand in your___
A.paper B.papers C.a paper D.the papers
4.Lots of things are made of ___,we must protect___
A.woods woods B.wood wood C.wood woods D.woods wood
A.a train B.the train C.trains D.train
2.you'd better do morning ___every day.It's good to have lots of___.
A.exercise,exercise B.exercises,exercise C.exercise,exercises D.exercises exercises
3.Please hand in your___
A.paper B.papers C.a paper D.the papers
4.Lots of things are made of ___,we must protect___
A.woods woods B.wood wood C.wood woods D.woods wood
问题解答：
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