19．听短文，选择正确答案．短文读两遍． 16．Mr．Chaplin can't be here because he's略． A．gone to England B．ill C．gone to America 17．There is an important略exam today． A．Math B．English C．Chinese 18．The exam ends at略o'clock this morning． A.11 B.9 C.7 19．If there is a difficult question，you should略． A．write it clearly B．answer it first C．go on to the next one and come back to it later 20．Don't leave questions unanswered； sometimes a略may help you get points． A．guess B．guest C．gate．
