He was told that it would be at least three more months ___________he could receover and return to work.
A．whenB．beforeC．sinceD．that
B
考察連詞。  A.當(dāng)……時(shí)   B.在……之前  C.自從……以來(lái)   D.那個(gè)，引導(dǎo)定語(yǔ)從句。句意：他被告知在他完全康復(fù)重新工作之前，最好要有三個(gè)月的時(shí)間。故選B。
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