Li Ming is clever, honest, and hard-working. _________, he is a good student and we should learn from him.
The scientist _____ Canada and he will give us a talk when he _____ back.
He found his book this morning, but now he _____ his pen.
She ____ to her hometown several times.
It _____ Jane and Mary who helped me the other day.
I _____ to bed when the telephone rang.