[ Grammar ]
We __________ each other since our secondary school days and we are still in touch with one another.
A. know
B. have known
C. had known
D. have been knowing
Select your answer:

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Modal Verbs › ViewViet ________ speak English very well because he studied it for six years.
A. must
B. ought
C. should
D. might
First Conditional › View
If you ______ hard, you’ll ______ good mark
A. Study, get
B. Study, got
C. Studi, get
D. Study, gett
