Each of the following sentences has one mistake. Identify the mistake by writing A, B, C or D the answer sheet

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III. Each of the following sentences has one mistake. Identify the mistake by writing A, B, C or D
the answer sheet.
16. I haven't heard to Maria for a long time.
CD
17. Nam has not finished his homework yet, and Hoa hasn't, neither.
А
A
B
C
D
18. She has a friend whom is the manager of this company.
A
В
D
19. Mr. Green has taught such many students that he can't remember all of their names.
A
В
C
D
20. She wanted to know how long did it take to get there.
D
A
В
C
IV Rewrite each of the following sentences without changing moon