时态填空，阅读下面一篇短文，根据情景，用所给动词的正确时态填空。

Do you know sports lotteries(彩票)? Young people can get addicted(上瘾) to it, especially if they 1.   ___(win), they 2.__      __ (think) playing the lottery is the right way to make money. But it’s not. Tiantian, a student in our city, 3.       ___(go) home on time to study after class every day before. But for the past two months, he has been running home to do a new kind of “homework”. He’s busy pickinglucky numbers in sports lotteries. He said he spends 20 yuan buying lottery tickets every week. Of course, he 4.__       __ (win) little money. So “I am going to keep on buying tickets every week,” he said. Quite a lot of young students, like Tiantian, are attracted（吸引） by this game. Because all of them believe “Win big money with only two yuan!” In fact, Tianyian didn’t win big money, at the same time he 5.        (fail) in his study. Experts say the lottery is bad for students.

用所给动词的适当形式填空。

11. －Why isn’t Jim here?

－He’s busy. He ___________（take） care of his aunt’s baby at home now.

12.－What’s Mr. Clarke going to do tomorrow?

　　　 －He’ll go fishing if it____________（not rain）.

13. Linda_____________ （make） a lot of friends since she came here last autumn.

14.－Did Jack finish__________ （clean） the house this morning?－Yes, he did.

15.－ Have you heard of the Great Wall, Mr. Read?

　－Yes. It’s a place of great interest in China. It ________（build） thousands of years ago.