— When did your uncle arrive in China?
— He got to Guangzhou the morning of the 16th of April.
| A．in | B．at | C．on | D．For |
--Has Tommy finished his project yet?
--Maybe not. He ___on it at lunch time. Let's go to have a look now.
| A．has worked | B．is working |
| C．was working | D．had worked |
--Is that Anna's car?
--It____be hers. She has just gone to the theater for the new opera.
| A．can't | B．mustn't | C．may | D．could |
Following the traffic rules can help us____ accidents.
| A．influence | B．repeat | C．produce | D．avoid |
Nowadays Wechat is____used by people for communicating, sharing, chatting, and so on.
| A．lastly | B．exactly | C．widely | D．nearly |
All the teachers love Mary. She is veryin answering teachers' questions in class.
| A．polite | B．direct | C．active | D．lively |