the windows were very dirty,but he them at last.A、managed to cleanB、tried to clean C、tried cleaningD、managed cleaning为什么bcd不可以

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the windows were very dirty,but he them at last.A、managed to cleanB、tried to clean C、tried cleaningD、managed cleaning为什么bcd不可以
the windows were very dirty,but he them at last.
A、managed to clean
B、tried to clean
C、tried cleaning
D、managed cleaning
为什么bcd不可以

the windows were very dirty,but he them at last.A、managed to cleanB、tried to clean C、tried cleaningD、managed cleaning为什么bcd不可以
at last 说明他们最终做到了,所以用manage to clean .

A
三个答案都有设法去做的意思.
manage 设法做,最后做到了蔼 he did it!
try 尝试做,一般不成功的,只是尝试
manage to do 这是固定搭配,所以D选项被完全否定