―Did you meet Professor Johnson?
―Yes, but when I arrived, he ________, so we only had time for a few words.
| A．had just left | B．has just left |
| C．was just leaving | D．just left |
She often shares her deepest thoughts and fears with friends through QQ, as if they ________ chatting in her living room.
| A．were | B．are |
| C．had been | D．has been |
—The research on the new flu virus vaccine is challenging and demanding. Who do you think can do the job?
—________ my students have a try?
| A．May | B．Must |
| C．Will | D．Shall |
I ________ him in time, otherwise he would have fallen off the bike.
| A．had supported | B．supported |
| C．have supported | D．support |
The project was carefully planned, or a great deal of money ________.
| A．will lose | B．will be lost |
| C．would have lost | D．would have been lost |
—How dangerous it was!
—Yes, but for the passerby's quick action, the girl ________.
| A．was drowned | B．could have been drowned |
| C．had drowned | D．should be drowned |