17．Do you know the boy________(call) Jack?　

16．It's important for you _____(learn)English well．

15．You'd better _______ (ask)the policeman over there．

14．If it ______ (not rain)tomorrow，we'll have a picnic．

13．Neither my father nor my brother ________ (help)us．

12．Why not _____ (go)skating with us?

11．Would you like ______________(have)dinner with me?　

10．________(越过)the river，and you will find the old house．

　　 B．用所给动词的正确形式填空。　

9．When the t______(交通)lights are red，you must stop and wait.

8．All of us come to school early e_______ (除了)Tom．