问题
选择题
They won't let him out of the hospital ________ he's completely recovered.
A．since
B．until
C．if
D．as
答案
答案：B
考查状语从句中的连词。句意：直到他完全恢复他们才允许他出院。这里考查固定句型“not...until”，意思是“直到……才”。
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They won't let him out of the hospital ________ he's completely recovered.
A．since
B．until
C．if
D．as
答案：B
考查状语从句中的连词。句意：直到他完全恢复他们才允许他出院。这里考查固定句型“not...until”，意思是“直到……才”。