so difficult ____it to live in an English-speaking country that i determined to learn English

so difficult ____it to live in an English-speaking country that i determined to learn English
A.i have felt B.have i felt
C.i did feel
d.did i feel
选哪个.为什么?
英语人气:603 ℃时间:2019-11-06 03:03:03
优质解答
D
这是个倒装句.
例如:
So fast did he run that we can't catch up with him.
这句话又是过去时,所以选D.
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