The taxi driver ________ and began to rob his passenger with a fruit knife when suddenly a policeman turned up.

hard she tries, she can hardly avoidmaking mistakes in her homework.

Willie has complained to the sales manager about the PC he bought _____ screen exploded for no reason.

Li Ming， it’s said that many famous singers will come to Yangzhou in June. How about watching the evening show there —______! Let’s ask Wang Gang to go with us.

（题文）The water supply has been cut off temporarily because the workers ________ one of the main pipes.