The meeting had been on for half an hour _______ Miss Yang turned up.
A.while
B.As
C.Unless
D.before
D
考查从句中连词的选择。此处有“在—之前”。
The meeting had been on for half an hour _______ Miss Yang turned up.
A.while
B.As
C.Unless
D.before
D
考查从句中连词的选择。此处有“在—之前”。