1．Gina likes science，and she wants to be a scientist when she grows up.
2．She sent me an email ten minutes ago.
3．Discuss this problem in your group.Then you should tell me the answer.
4．—What happened to Lucy last night?
—She had a cold.
5．My father told us a joke，and it made us laugh.
6．There are four theaters(戲院)in our city.
7．You can buy books the most cheaply(便宜地)in our bookstore.
8．How about choosing(挑選)a red hat?
9．Jack is a brave boy and wants to be a pilot(飛行員)in the future.
10．My hobby(業余愛好)is collecting stamps.