______, the alarming clock woke him up. A. While ...

★ Adverbial Clauses

______, the alarming clock woke him up.

A. While my brother was sleeping

B. As soon as my brother has slept

C. Before my brother was sleeping

D. By the time my brother sleeps

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The students don’t stop making noise ______ them to.

A. until the teacher asks

B. once the teacher had asked

C. while the teacher has asked

D. by the time the teacher asked