单句语法填空
1．You can’t imagine the trouble I had (persuade) him to change his mind.
答案：persuading
2．These ancient buildings (witness) the rapid growth of the city as well as the growth of this country.
答案：have witnessed
3．Although he made a serious mistake in his work, he was lucky to escape (fire) by his boss.
答案：being fired
4．This job could be done (equal) well by a computer.
答案：equally
5．Everything begins hard. Don’t hesitate to turn me if you are in difficulty.
答案：to
6．Everyone who reached the top of Mount Tai (reward) with a magnificent view.
