He left school early, and as an adolescent, determined ______ in South American, set off from his home.

Children under 18 will not be ____into the pub in this country.

Your watch is so beautiful. It must be expensive.-Not at alL I only 20 for it.

I think it is going to be a big problem.—Yes，it could be.—I wonder__________we can do about it.

Did you go to see the doctor yesterday– Yes, the doctor advised me ________ too much junk food.