Mr. Johnson, together with his wife and two daughters, ____ to arrive on the evening flight. 

By the time these books were published,  he _____ addicted to them.

If we use the new recycling method, a large number of trees         .

—How long _____ he ______ in the USA?—Three years. But he never regrets coming back to China.

When Mary came, I _____ on the piano.