题目内容
So difficult ________ it to work out the problem that I decided to ask Tom for advice.
[ ]
A.
I did find
B.
did I find
C.
I have found
D.
have I found
答案:B
解析:
解析:
|
考查“so+形容词”位于句首时的倒装用法,即把助动词放在主语的前面。 |
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