Ⅰ. 单句语法填空
1. Change of climate must have had a powerful influence on migration (migrate).
2. I have in my possession (possess) a letter which may be of interest to you.
3. They have no mercy on the poor father and daughter.
4. A man is under arrest following the suspicious death of his wife.
5. Fifteen million trees had been blown down by the high winds, blocking (block) roads, paths and railway lines.
6. What makes his parents worried is not his grades but that he hasn’t any interest in learning.
7. Many chemicals have a damaging (damage) effect on the environment.
8. Both of them have been through an awful lot and hopefully (hopeful) now I can help them rebuild their lives.
