．Unfortunately, when I arrived, Mary , so we only had time for a few words.
| A．was just leaving | B．just left |
| C．has just left | D．had just left |
— Shall we go and have a picnic at the weekend?
— ______. According to the weather forecast, there might be a cold front by then．
| A．Why not | B．We can wait | C．No, let's not | D．It depends |
She is _____ newcomer to _____chemistry but she has already made some important discoveries.
| A．the; the | B．the; / | C．a; / | D．a; the |
—I have to go home now. Daddy and Mummy must be waiting for me.
—OK. .
| A．Take it easy | B．Come on |
| C．You’re welcome | D．See you |
A large number of people are _____, and how can the local government ignore the problem?
| A．at work | B．in work | C．out of work | D．after work |
A lot of praises have come from those _____ patients because they are getting better after taking the medicine.
| A．peaceful | B．hopeful | C．successful | D．grateful |