Great changes in China since 1978.
| A．took place | B．has happened | C．have taken place | D．happened |
It’s very late at night, ____ our teacher is still working .
| A．and | B．but | C．or | D．so |
--- ______ you give your seat to this old man?
--- Of course.
| A．Can | B．Shall | C．Need | D．Must |
My mother has two brothers. One is a doctor, ____ is a lawyer.
| A．other | B．another | C．others | D．the other |
The price of the bus ticket is much ____ than before.
| A．cheap | B．cheapest | C．cheaper | D．the cheapest |
--- ______ helped the poor cat find its home?
--- My best friend, Mary.
| A．What | B．Who | C．Whose | D．Which |