My sister met him at the Grand Theatre yesterday afternoon, so he ________ your lecture.
A. couldn’t have attended B. needn’t have attended
C. mustn’t have attended D. shouldn’t have attended
—How is that, Joan?
—Yeah, it’s from the boss. She _________ first, whether she likes it.
A. shall go B. ought to have gone C. should go D. must have gone
_______ fired, your health care and other benefits will not be immediately cut off.
A. Would you be B. Should you be C. Could you be D. Might you be
— Turn off the TV, Jack. ____ your homework now?
— Mum, just ten more minutes, please.
A. Should you be doing B. Shouldn’t you be doing
C. Couldn’t you be doing D. Will you be doing
—Who is the girl standing over there?
— Well, if you _____ know, her name is Mabel.
A. may B. can C. must D. shall
—They haven’t finished the work up to now.
—Well, they________.
A. should B. should have C. would D. must have
