Many old people take a walk after supper ____ have good health.
I often saw the boysin the river.
This math question is too difficult. Can you help me?
Mr. Black asks the kids ________ in the river, because it’s too dangerous.
He is very angry with his mother, because his mother alwayshim with the best student.
—What’s wrong? —I can’t do my homework now. Imy homework in the classroom this morning.