(2014·东北三校模拟)We had just covered half th
题型:选择题
问题:
(2014·东北三校模拟)We had just covered half the journey________the engine failed and we could do nothing but wait for help.
A.before
B.since
C.when
D.until
(2014·东北三校模拟)We had just covered half the journey________the engine failed and we could do nothing but wait for help.
A.before
B.since
C.when
D.until