have you been studying English?-For about 2 years. [ ]

You’d better not _________ the picture so high, it’s not easy for people to notice it.—Yeah. You’re right.

All the students are talking and laughing in the classroom and it’s _________.

You look unhappy， my son?—I’m wondering how long it’ll be we come to China again.

“I made a to London on business last week,” said Li Ming from China.