1．我一上午都在做功课。

　　 I'm doing my homework the　　　　　 　　　　　　　．

5．The dictionary cost her 90 yuan．(改为同义句)

　　 She 　　　　　　90 yuan　　　　　　 the dictionary．

4．You should put some fruit into the blender next．(就划线部分提问)

　　 　　　　　　　　　　　　　you do next?

3．I can go shopping with you this weekend．(改为否定句)

　　 I 　　　　　　　　　　　　shopping with you this weekend．

2．Mei Lanfang began to perform Beijing Opera at the age of ten．(改为同义句)

　　 Mei Lanfang began to perform Beijing Opera 　　　　he　　　　　 ten．

1．Laura visited her grandparents last week．(改为一般疑问句)

　　 　　　　　Laura 　　　　　　her grandparents last week?

15．How many 　　　　(slice)of bread are there on the table?

14．Who is 　　　　　(young)，your mother or your father?

13．Thank you for 　　　　　(invite)me to your house on Friday．

12．We are 　　　　(real)sorry to hear that her mother is ill．