1.our teacher told us _（study）hard 2.the scientis
1.our teacher told us _（study）hard 2.the scientis
1.our teacher told us _（study）hard
2.the scientist tried his best make his view_.
A.to understand B.understand
C.understood D.understanding
1.our teacher told us _（study）hard
2.the scientist tried his best make his view_.
A.to understand B.understand
C.understood D.understanding
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