English teacher give advice that we ____ (make) good use of every chance to speak English.
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Had I received your letter, I ____ (set off) two days ago.
If we (catch) the flight yesterday, we would be enjoying our holiday on the beach now.
Do you know _____ start?
A. when we will
B. when shall we
C. when will we
Nobody is sure _____ to visit our school.
A. how does he come
B. where will he come
C. when he is coming
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