John hasn’t come yet, I don’t know _____.
Einstein, the famous scientist, was born ______ March, 1897.
Mr. Lin gave the textbooks to all the students ______ the ones who had already taken them.
It’s rather cold in most of South China ____ in spring.
When the school building began to shake, the teachers ran downstairs ____ all the students. The teachers are real heroes. A. after B. with C. before
Mr. Smith lives ____ that building. His house is ____ the fifth floor.