15. 他一到加拿大就把电话打了过来。

   He called us  _______________________ Canada.

14.  咱们一起去公园怎么样？

   ___________________   going to the park together?

13. 过去那里有一棵大树。

   There  _____________________ be a big tree.

12. 他年龄太小了，不能自己购物。

   He is _______________  shopping by himself.

4. Don’t buy it under ______________ years of age.

根据对话内容，用方框中所给词的正确形式填空。

wife,   your ,  came,    photo,    staying,  everything,   middle,

Tony: Look, here is a new picture of my family.

Sally: I see. The man with glasses is your father and the woman in white is ____5___mother. Who is man in the _____6________?

Tony: That’s my cousin, Alex. And the woman on his left is his ___7___. They are here for a visit.

Sally: Are they  _____8_____ with you?

Tony: Yes. They   ____9_______ from Shanghai and will stay here for a week. They have been to many interesting places and taken many ____10______.

Sally. I hope they like Beijing.

Tony: Yes. They do. They like ____11_______ here.

3. Don’t throw away waste in _____________places.

Smoking

2. __________

Move on the left.

Waste

1. Don’t make unnecessary noise, especially at ___________.