问题

It’s very important for students to learn a language it.
A: to use
B: byuse
C:withusing
D: by using
B: byuse
C:withusing
D: by using
正确答案是:
同类题型
Don’t talk ______. Your grandmother is sleeping now.
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Whatdid you see when you came here —Ifound Jim ________ the desks.