Simple Sentences Errors - Use of Is, are, am, was, were, has, have, had

Please correct the following sentences:-


1. I were not in the meeting.

2.  All of them is busy in the work.

3. Did he has any problem?

4. How many book have she bought today?

5. My father were not in the office yesterday.

6. Was your grandparents in the park at that time?

7. This TV is a good picture tube.

8.  Do you are her photo?

9. How has your mother now?

10.  Why does the principal has so much faith in the teachers?


Answers:
1. was,  2. are,  3. have,  4. has,  5. was,  6. were,  7. has,  8. have,  9. is,  10. have