用括号中所给单词的适当形式填空。

1．Please call me if you have any problems ____________ （work） out．

2．Marie Curie received the Nobel Prize ____________ （two） during her life time．

3．I think it is ____________ （danger） for children to be close to wild animals．

4．The old man has been ____________ （die） since three years ago．

5．I know only one of the ____________ （visit），how about you?

词语运用（共5小题，每小题1分，计5分）

用括号中所给单词的适当形式填空。

1.Please call me if you have any problems ____________ (work) out．

2.Marie Curie received the Nobel Prize ____________ (two) during her life time．

3.I think it is ____________ (danger) for children to be close to wild animals．

4.The old man has been ____________ (die) since three years ago．

5.I know only one of the ____________ (visit)，how about you?