Question

The teacher___ (check) the a
nswer sheet last week

Answer 1

Answer:

THE TEACHER CHECKED THE ANSWER SHEET LAST WEEK

Explanation:

check will convert into past tense.

I hope it helps you dear.

Answer 2

Answer:

The teacher had checked the nswer sheet last week.

Explanation:

You can understand by seeing the word last week. This work has already done in past so you should use ed and had

hope this will help you