What do you think ___ Chinese teacher, Lingling —-She is an excellent teacher. I’ve improved a lot since she taught___ Chinese.

Some people fear that ______ airpollution may bring about changes in ______ weather around the world.

Hello, Paul, do you like to join us in playing football? We need one more person to ____ a team.— Yes, I’d like to.

ening when it was swarm, I stayed awake___________ until half past eleven in order to have a good look at the moon bymyself.

I believe we could face delays if we travel by bus，________ traffic jams.