13．My grandfather is too old 　　　　　　(drive)a car．

12．一Wbuld you mind getting up? You have to help me in the kitchen．

-OK，I 　　　　　　(get)up right away．

11．I've been 　　　　　(collect)snow globes for several years．

10．Of all the students in Class 3，Jim is the 　　　　　(慢的)in running．

　　 (二)根据句意，用所给单词的适当形式填空，必要时可加助动词或情态动词。

9．Many good ways of improving English are 　　　　　(提及)in this book．

8．My daughter is learning　　　　　 (俄语)．

7．Scientists 　　　　　　(假定)that large dinosaurs(恐龙)lived in swamps(沼泽地)．

6．I want to be an astronaut and 　　　　　(飞)in the sky．

5．一Who d　　　　　　 America?

　 一Don’t you know that? It's Columbus(哥伦布)．We’ve learned it in our history book．

4．It's i　　　　　　 to speak loudly in the public．