问题

An ant was drinking by a small river when it fell in.It made ______ efforts to reach the side，but made no progress at all.

A:negative
B:total
C:desperate
D:careful

正确答案是：

同类题型

Mr. Green stood up in defence of the 16-year-old boy, saying that he was not the one _____.[ ]

____ Miss Brown ____ out all of her records —No, not yet.

My aunt didn’t ________work when she had the baby.

I ______ him for a long time.

He is certainly an lawyer but people say that he lacks a human touch.