Sometimes parents’ control of young kids will be thought to be such an invisible rope with which to tie them tightly that they _____ tried to cut it

_______the thick clouds, you would find the kite in the sky easily.

Excuse me, what’s the time for Train 8201— It _____ at seven and you can wait in the hall.

Economy is booming, so it is hard for some of the firms to _____ enough labor , though their working conditions are rather good.

Having checked the doors were closed, and ___ all the lights were off, the boy opened the door to his bedroom.