Time is the thing _____ never comes back. We should make full use of it.

What’s the model plane look like? — Well, the wings of the plane are ______ of its body.

They won’t buy new clothes because they money to buy a color TV set.

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

.My tutor explained that I ________read lots of different texts that contain different opinions.