It was at 12 o’clock _________ they came home from school.

–Why did you come so late for work—–I was ________ for 15 minutes on theway here in the traffic jam.

Recently people have made great progress in using ____power of nature to produce____ electricity.

raid he’s more of a talker than a doer, which is______ her never finishes anything.

As nobody here knows what’s wrong with the machine, wemust send for an engineer to _______ the problem.A．raise B．face C．present D．handle D【解析】试题分析：考查动词：