15．You must be verytired after a day of hard work．——青夏教育精英家教网——

15．You must be verytired （疲劳的） after a day of hard work．

14．---How much do you spend_________ the beautiful jeans？
---They _________me 80yuan．（　　）

13．People use QQ to _________ with each other on the Internet．（　　）

12．He goes to school by bus，but he walks ___________ after school．（　　）

11．My brother often __________ my mum ________ the house on Sunday．（　　）

helps； cleans

10．Iwas doing（ do） my homework when the light went out yesterday．

9．The trainhad left（ leave） already when we arrived．

8．Our home townhas changed（change） a lot over the years．

7．Gravity is a force that stops us fromfloating （floa） in the air．

6．We will visit the farm if itdoesn't rain （not rain） tomorrow．

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