Ⅰ.单句语法填空
1．The ice will break up when the warm weather comes.
2．As a professor, you could come up with absolute solutions.
3．You must not be absent from the meeting without cause.
4．I think he felt discouraged (discourage) because of all the criticism he'd received.
5．In case of failure, our backup during the storm was our secondary disaster recovery site.
6．The good thing about children is that they adapt very easily to new environments.
7．It was the first time that she had_set (set) foot on the moon, so she was a little nervous in the beginning.
8．Helen paid a visit to her grandmother yesterday and found that she was in a terrible state.
9．Seeing the goat tied up, the wolf was trapped into jumping (jump) into the trap.
10．Our daughter is a great dancer, and she stands out above the rest in this competition.
