—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
Martin hasn't got in touch with me for ages. He ________ my new cell phone number.
A．can't get B．mustn't get
C．can't have got D．shouldn't have got
According to the rules and regulations, all payments ________ be made in cash in the shopping center.
A．shall B．can
C．must D．should
