问题

English is used_a second language people in many countries.[ ]

A: as; by
B: as; for
C: for; by
D:by; for

正确答案是：

标签： english , used

同类题型

___________ from space, the earth looks like a blue ball.

Where __ Lily and Lucy from?

If he _____ with us, we _____ finish the task earlier last time.[ ]

When _______ to F

What can I do for you? —I want ______.Thank you.