问题补充:
(·长沙高考模拟)I him in time, otherwise he would have fallen off the bike.
A. had supported
B. supported
C. have supported
D. support
答案:
A. had supported
(答案→)B. supported
C. have supported
D. support
解析:B句意:我及时扶住了他,否则的话他就从自行车上摔下来了。support这个动作发生在过去,因此用一般过去时。