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
（2012重庆）—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
（2012天津）Who listens________，Tom，Jack or Bill？
A．the most carefully
B．more carefully
C．the most careful
D．more careful
（2013陕西）—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
（2013天津）Mr Smith thinks running is________than gymnastics．
A．very popular
B．more popular
C．most popular
D．the most popular
