20．在录音中，你将听到一篇短文及五个问题．请根据短文内容及问题选择正确答案．短文及问题听两遍．
16．A．In Britain． B．In America． C．In Canada．
17．A．He was badly ill．
B．He couldn't speak English．
C．He had to translate．
18．A.500． B.1000． C.1500．
19．A．To go on with his translation．
B．To go outside and play．
C．To walk in the playground．
20．A．His teacher． B．His friends． C．His parents．
