用所给动词的正确形式填空。
(1) — Why isn't Jim here?
— He's busy. He __________ (take) care of his aunt's baby at home now.
(2) — What's Mr. Clarke going to do tomorrow?
— He'll go fishing if it __________ (not rain).
(3) Linda __________ (make) a lot of friends since she came here last autumn.
(4) — Did Jack finish__________ (clean) the house this morning?
— Yes, he did.
(5) — Have you heard of the Great Wall, Mr. Read?
— Yes, I have. It's a place of great interest in China.
It _________ (build) thousands of years ago.
