Ⅰ.单句语法填空
1．He complained (complain) that his boss was extremely mean to him.
2．I'm fully convinced (convince) that doing voluntary work can help enrich our life and broaden our horizons.
3．The association (associate) in their company launched a campaign for a ban on tobacco advertising.
4．There is a growing tendency (tend) among young people to get married at a later age.
5．The discovery of the new drug is of great significance (significant) to people suffering from heart disease.
6．Whatever Lisa does, she always wants to win the approval (approve) of other people.
7．Out of curiosity (curious), we opened the box, only to find there was an old photo in it.
8．The damage of the hurricane was far more serious than initially (initial) reported.
9．Having finished supper, Professor Wang got down to his experiment in the lab.
10．A huge number of invitations have been sent out already; what we do next is prepare for their coming.
