What some Chinese parents understand is that nothing is fun _______ their children are fond of it

Scissors can be dangerous, so don’t play with them.— _______ .

It is reported that the United States uses ________ energy as the whole of Europe.

56. I found _______impossible for _______towork out the maths problem.

I’m sure Jack can win the competition this term.—Yes, I agree. _________ he works in his free time!