If we had not been by the traffic jam we would have arrived an hour earlier. A. held dow

问题补充：

If we had not been by the traffic jam, we would have arrived an hour earlier.

A. held down

B. held away

C. held on

D. held up

答案：

A. held down

B. held away

C. held on

(答案→)D. held up

解析：考查短语辨析。A“抑制”；C“不挂断电话，继续”；D“举起，提出，堵塞”。句意“如果我们没有遇到堵车，我们就能早来一小时了。”故选D。