__________ I got home, the clock struck 12.
| A．When | B．While | C．During | D．/ |
—Where ____ Margaret have put the empty bottles?
—She ______ them away. They must be somewhere.
| A．can; can’t have thrown | B．must; needn’t |
| C．must; must have thrown | D．can; must throw |
—Why aren’t they here yet?
—They the bus.
| A．can have missed | B．must be late for |
| C．may have missed | D．might be late for |
—Has your father got up?
—Sorry, I’m not sure. He __________ got up. Please go and see for yourself.
| A．must have | B．can’t have | C．would have | D．might have |
－You must say sorry to Mary, Jack.
－Why ________ I say sorry to her? It’s her who hurt me first.
| A．should | B．would | C．could | D．might |
—Why didn’t you put your cellphone in your overcoat pocket?
—I, but I was afraid it would be stolen.
| A．had put | B．put | C．would have | D．could have |