Rewrite the following sentences as required（根据所给要求，改写下列句子。

Rewrite the following sentences as required（根据所给要求，改写下列句子。每空格限填一词)

1. Mary went to London for a study trip last summer. (改为一般疑问句 )

   __________ Mary __________ to London for a study trip last summer?

2. It took Paul half a day to get his car fixed yesterday. ( 对划线部分提问)

   __________ __________ did it take Paul to get his car fixed yesterday?

3. Alice has never tasted such perfect apple pie before. (改为反意疑问句)

   Alice has never tasted such perfect apple pie before, __________ __________?

4. "Could you please pass me the book on the table?" Jenny asked David. (改为宾语从句)

   Jenny asked David __________ __________ could pass her the book on the table.

5. The teacher offered the students a lot of advice on how to learn English. (改为被动语态)

   The students __________ __________ a lot of advice on how to learn English.

6. Sam was so tired that he couldn't continue driving the car. (保持句意基本不变 )

   Sam was __________ tired __________ continue driving the car.

7. the Great Wall, visit, many foreign friends, each year (连词成句)

   ___________________________________________________________________

1. Did, go  2. How long  3. has she 4. if/whether he

5. were offered  6. too, to

7. Many foreign friends visit the Great Wall each year.