题目内容
一A11 of us don’t know these words.
— look them up in the dictionary?
A.Why B.What about C.Why don’t D.Why not
D
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It’s very kind__________you to help me with my English.
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一Not at a11.I think it is important____________us to help each other.
| A.of,of | B.for,of | C.of,for | D.for,for |