To make members of a team perform better, the trainer first of all has to know their ______ and weaknesses.
I should not have laughed if I ______ you were serious.
He ________ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it.
—Do you think George has passed the driving test?—No. If so, he _____his car to our college yesterday.
(2013·北京卷) If we a table earlier, we couldn’t be standing here in a queue.
(2013·北京卷) --- You needn’t take an umbrella. It isn’t going to rain. --- Well, I don’t know. It do.