—Has Mr. Black decided not to take part in the party?
—Yes. But the reason______he refused the invitation is not clear.
A.what | B.for which | C.with what | D.which |
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—Has Mr. Black decided not to take part in the party?
—Yes. But the reason______he refused the invitation is not clear.
A.what | B.for which | C.with what | D.which |