用所给动词的适当形式填空。
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. It's a place of great interest in China. It ________(build) thousands of years ago.