问题描述：
1、（）he( )(teach）at No.1 Middle School
2、My uncle often works late becaues he has a lof of work( )(do)
3/Mr Green is busy ( )(clean)the house
4/The police ( )(be)looking for the last boy
5/Cai Zhenhua is a famous ping-pong c_____
2、My uncle often works late becaues he has a lof of work( )(do)
3/Mr Green is busy ( )(clean)the house
4/The police ( )(be)looking for the last boy
5/Cai Zhenhua is a famous ping-pong c_____
问题解答：
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