I won’t tell the student the answer to the math problem until he _____ on it for more than an hour.[ ]

The rich man much food the poor families during the hard time.

Mum, I am ready for the match! -________________!

Mum, how did it ____ that you cooked the dish so salty– Er, I myself haven’t tasted it yet .

He is always sitting on the sofa, eating some food and watching TV because it’s very__________