IV. Complete the sentences with the correct form of the verbs:
16. We (go) ________ on holiday if there is time.
A. go B. will go C. went D. had gone
17. If we (need) ______ some help, we’ll ask.
A. need B. needed C. needing D. needs
18. She can (speak) _______ English very well.
A. speaking B. to speak C. speak D. speaks
19. Next year, my sister (be) _______ a teacher.
A. is B. will be C. being D. was
20. Children shouldn’t (buy) _______ firework at Tet holiday.
A. buys B. buy C. to buy D. buying
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16. C
17. A
18. C
19. B
20. B
16.B
17.A
18.C
19.B
20.B