帮忙求解英文！！

1.She goes to the library on____foot.

2.I have_____envelope,but I haven't got_______stamp.

3.Alan: What didi you do last_______Sunday?

4.I have_____envelope，but I haven't got____stamp

5. Alan:what did you do last______Sunday?

6.Could you switch off____TV?Nobody is watching it.

7.There is_______post office in West STreet

8.Mary listens to______radio every night.

9.Dolphins are______intelligent animals.

10.He went to______bed at nine o'clock last night.

11.Mr.wong was sent to_____hospital.

12.I bought_____box of choclates in the supermarket.

朋友问我我也不会=。=我英语白痴。

大大们帮忙 写题号+答案就OK 谢谢 感谢 跪谢！~~~

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2.an，a

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4.an ,a

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6.the

7.a

8.the

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11.a

12.a

1.不填 2.an a 3.不填 6.the 7.a 8.the 9.不填 10.不填 11.the 12.a