I am sorry you’ve been waiting so long, but it will still be some time __________ Brain gets back from his holiday.
A．sinceB．beforeC．tillD．a(chǎn)fter
B

試題分析：句意：抱歉你等了這么長時間，但是，Brian度假回來還得一段時間。It +be +一段時間+before從句，肯定句翻譯為：要多久才….如：It is going to be some time before I recover my full strength. 還要一段時間我才能完全恢復(fù)體力。故B正確。
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