To make members of a team perform better, the trainer first of all has to know their .
(2013·天津,14)If he had spent more time practising speaking English before, he ________ able to speak it much better now.
—Do you think George has passed the driving test? —No. If so, he ________ his car to our college yesterday.
(2013·全国Ⅱ,6)Since nobody gave him any help, he ________ have done the research on his own.
—You needn't take an umbrella.It isn't going to rain. —Well, I don't know.It ________ do.
When I was a child, I ________ watch TV whenever I wanted to.