－Miss Gao is popular among the students.－Yes. Her classes are always and interesting.

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

You’d better make a mark ______ you have any questions.

Can people drive after drinking a glass of beer?—No. According to the law they _________.

Hey, Jack. You ________ on the phone just now. But you weren’t here and the man left a phone number. —Oh? I was in the library.