[ Preposition of Time ]
My English class will start _________ fifteen minutes.
A. in
B. on
C. at
D. (nothing should be added)

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Time and Calendar › ViewThe month which do not have 31 days in a month ……
A. January
B. March
C. April
D. May
Grammar › View
How long ____ the drums?
A. have you been playing
B. you have played
C. have you playing
D. have you played
Grammar › ViewChoose the word that matches the picture.
A. brush
B. brushes
Tenses › View
I _____(help) her take care of her children tomorrow.
A. will help
B. had been helping
C. have helped
D. am helping
