Dr. Ma used to two or three persons in the hospital.
---How does Jack usually go to work? ---He _____ drive a car, but now he _____ there to lose weight.
--- Don’t play with the knife, ______ you’ll cut your hand. ----Sorry, I ______ .
American First Lady Michelle Obama arrived ______ China _______the afternoon of March 20, 2014.
.---- The presidents of China and the USA had ___interview a short time ago. ---- And it was __great success.
— How much does it cost to built the school library? — Fouryuan.