1.Thank you very much for the alarm clock you sent me on my 15th birthday.

II.

1.You didn't remember turn of the TV last night, did you ?

2.

1.You didn't remember to turn off the TV last night,did you?

2.Even though Mr.Thanh is old, he runs 5 kms every morning.

3.Not until the bell rang did he finish his work.

5.He hates being asked about his past.

6.If it hadn't been for tom's help,Bill couldn't have finished the work.

7.William suggested Mary should put my luggage under the seat.

=>
1. Thank you very much for the alarm clock you sent me on my 15th birthday.

2. You didn't remember to turn off the TV last night, did you?
3. Even though Mr.Thanh is old, he runs five kilometres every morning.
4. Not until the bell rang did he finish his work.
5. He hates being asked about his past.
6. If it hadn't been for Tom's help, Bill couldn't have finished the work.
7. William suggested Mary should put her luggage under the seat.
8. They said that it was time they went to bed.