There is one mistake in each sentence, find out and correct it

B. received
any newS.
C. will get
There is one mistake in each sentence, find out and correct it.
D. am going to get
1. Hung turns off the computer and then he went to bed.
A
B
C
D
2. Wait until the engine is cooler before you will check the oil and water.
A
B
C
D
3. Before Mary had signed the form, she was allowed to attend the class.
A
B
C
D
4. When our grandparents had lunch, they always fall asleep.
A
B
C
D
5. When we watched television, our father knocked at the door.
A
B
C
6. I'll send you a postcard as soon as I got there.
A
B
C
D
D
7. They have moved houses twice when they came here.
A
B C
8. We won't go until our mother will come back.
A
B C
D
D
9. I'll make some sandwiches before I'll leave for the office tomorrow morning
A
B
C
10. After my uncle has bought a new car, he sold his bicycle.
A
B
C
D
D