—May I speak to Lin Tao?—Sorry, he is not in. He ______ to Changsha.A. has been B. has gone C. went
To solve the traffic problem, more and more bridges ____________ across the river every year.
Be quick! Jim _______________ for us downstairs.
—How long have you __________ this book?—About thirteen days.
—_________is it from your school to your house? —Only a few minutes’ ride.
The _____________ we do our homework, the __________ mistakes we will make