Ⅰ.单句填空
1.(2020·天津卷)Jim says we      stay in his house as long as we leave it clean and tidy. 
2.(2020·江苏卷)If I hadn’t been faced with so many barriers,I      not be where I am. 
3.(2018·北京卷)In today’s information age,the loss of data      cause serious problems for a company. 
4.(2018·江苏卷)It’s strange that he      have taken the books without the owner’s permission. 
5.(2018·江苏卷)There is a good social life in the village,and I wish I      (have) a second chance to become more involved. 
6.(2018·天津卷)I can’t find my purse.I        (leave) it in the supermarket yesterday,but I’m not sure. 
7.(2018·北京卷)They might have found a better hotel if they        (drive) a few more kilometers. 
8.(2018·天津卷)If we         (catch) the flight yesterday,we would be enjoying our holiday on the beach. 
9.My room is a mess,but I      clean it before I go out tonight.I can do it in the morning. 
10.—Do you have Betty’s phone number?
—Yes.Otherwise,I         able to reach her yesterday.