[ Present Perfect Simple & Continuous ]
How long ______ you ______ your best friend?
A. have / knowing
B. have / known
C. have / been knowing
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Grammar › ViewWhat would your parents do if you ______________ your room?
A. weren’t clean
B. don’t clean
C. didn’t clean
D. not clean
Unreal Conditionals › View
If he had studied for the exam a little more, _________________________________.
A. he would have passed the class.
B. he would pass the class.
C. he has passed the class.
D. he had passed the class.