问题补充:
The driver could have survived, but he the seat belt.
A. had been fastening
B. hadn’t fastened
C. was fastening
D. didn’t fasten
答案:
A. had been fastening
B. hadn’t fastened
C. was fastening
(答案→)D. didn’t fasten
解析:考查时态。本题陈述过去的事实,故用一般过去时。句意:司机本可以活下来的,但他没有系安全带。故D正确。