The women with two children ____for one and a half hours.

Obviously, the boss looks happy again, doesn’t he—Yes. It’s said that he has ______ the difficult problem.

My parents used ________ they had to get anew car for me.

A proposal has been put forward at a recent video conference _____ measures be taken to raise the citizens’ awareness of traffic safety.

Hardly　　　our walk when it began to rain.