Have you heard of _________ about Jeremy Lin (林书豪)?—Yes. He did quite well in the last NBA basketball match.

_____ do you go to the zoo with your brother?—Three times a month.

The car accident happened ____ a cold winter morning. Luckily, no one was hurt.

The newspaper says if more underground lines next year, it will be much easier for people to travel around Nanjing.

Mr Green is ___ teacher. He is ___English teacher.