问题
填空题
根据句意，用所给动词的适当形式填空。
1. Why not _________ (go) out for a walk, Linda?
2. Our teachers often encourage us _________ (ask) questions in class.
3. He _________ (see) the film twice already.
4. The students will go to the Summer Palace if it _________ (not rain) tomorrow.
5. Talking loudly in public is not _________. (allow)
答案
1. go 2. to ask 3. has seen 4. doesn't rain 5. allowed