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题目内容
（云南工商学院-生活英语听说）
[单选题,10分] ____ they will send us an invitation is not yet known, __we hope they sill.
A.If...write
B.That so
C.When...yet
D.Whether...butt
A.If...write
B.That so
C.When...yet
D.Whether...butt
参考答案
