I have ____ e-dog.________ name is Hobo.
| A．a,Its | B．an ,Its | C．an, It’s | D．an,it’s |
It is better for you to walk down the stairs instead of ________ the elevator.
| A．taking | B．to take |
| C．take | D．taken |
He told us that he was tired and thirsty because he ________ in the desert for days.
| A．walked | B．has walked |
| C．had walked | D．would walk |
My mother ________ as an architect since she graduated from Tongji University.
| A．worked | B．has worked |
| C．had worked | D．is working |
According to the timetable, the plane ________ for Los Angeles at 5 in the afternoon.
A. would leave B. left
C leaves D. has left
I ________ hear the news very clearly since the noise outside is so loud.
| A．mustn’t | B．can’t |
| C．needn’t | D．may not |