解释Train services are now back to ______after

题目

解释Train services are now back to ______after
解释Train services are now back to ______after three days of typhoon.
A.usual B.common C.ordinary D.normal
He is the best ____English in our class.
A.at B.in C.for D.to
The policeman caught hold of the thief and hit him ____ head.
A.in the B.on his C.on the D.in his

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