根据句意，用括号内所给动词的正确形式完成句子。

1. Liu Yiting _______ (change) a lot since she entered Harvard University.

2. No SMOKING should _______ (see) in the stores even in many parts of the city.

3.—Mr.Brown likes children very much, doesn't he?

   —Yes, that's srue. He _______ (write) a children's book these days.

4. Now the pretty woman can't decide which pair of pants _______ (choose).

   Because they both look good on her.

5. —I haven't seen my grandma for a long time. —I'm looking forward to _______ (visit) her a lot.