The baby is about 52 centimeters tall________birth．
| A．in |
| B．at |
| C．on |
| D．for |
—________the population of China？
—It’s about 1.3 billion．
| A．What’s |
| B．How many is |
| C．How much is |
| D．How’s |
—What do you think of the film you saw yesterday？
—Oh！It’s one of________films I’ve ever seen．
| A．interesting |
| B．more interesting |
| C．most interesting |
| D．the most interesting |
Who listens________，Tom，Jack or Bill？
| A．the most carefully |
| B．more carefully |
| C．the most careful |
| D．more careful |
—It’s one of the________things in the world to stay with friends．
—I agree．It always makes us relaxed．
| A．worst |
| B．happiest |
| C．busiest |
| D．hardest |