[ 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 › ViewIf I don’t study for this test, I’m not going to do well __ if I don’t do well, I will cry.
A. Semicolon
B. Colon
C. Comma
TOEFL › View
Only when air and water seep through its outer coat ___________.
A. does a seed germinate
B. to the germination of a seed
C. a seed germinates
D. for a seed to germinate
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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.