Unit 5 单元检测题一、 单项填空（30分）( )1. The boy with two dogs _ in the yard when the earthquake hit the city.A. is playing B. are playing C. were playing D. was playing( )2 My father was reading a newspaper while my mother _ dinner.A. is cooking B. cooks C. was cooking D. will cook ( )3All the students were sleeping _they heard a man _“help”.A.when; shouting B.while; to shout C.when; to shout D.while; shout（ ）4. What were you doing _the rainsto
