Ⅰ.单句语法填空
1．I should have been out helping(help) my grandfather with his fence.
2. What have you been doing(do) during the holidays?
3．The higher the ground is, the thinner(thin) the air becomes.
4．I found it a boring film.
5．Could you bring down the price a little?
6．You will never gain success unless you are fully devoted to your work.
7．—I didn't think you were coming.
—Oh，I had intended(intend) to stay at home，but I changed my mind.
8．It is unbelievable that Mr Lucas leads a simple life despite his great wealth.
9．It was John who broke the window. Why are you talking to me as if I had done(do) it?
10．The university hopes to strengthen(strength) its ties with the local community.
