Your teacher ________ very angry at that moment because you talked back to her like that.
A．should have been B．must have been
C．must be D．might have been
Thanks to my teacher's valuable help, otherwise I ________ my college entrance exam.
A．can't pass B．hadn't passed
C．would not have passed D．have not passed
Oh, I'm not feeling well in the stomach. I ________ so much fried chicken just now.
A．shouldn't eat B．mustn't have eaten
C．mustn't eat D．shouldn't have eaten
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
