问题

a secret Promise no one else wouldknow it”, he lowered his voice and whispered ____ no one could overhear it

A:kept up
B:kept back
C:kept out
D:kept down

正确答案是：

同类题型

I will have a math test tomorrow.— ________

35. Between the two mounts_______and theydecide to build a ropeway.

Is this ______ dictionary —No, ______ isn’t. It’s ______ dictionary.

The passage is too hard to understand.—Yes, ________ it’s very short and there are no few words in it.

When the audience heard the funny story, they _____ laughter.