—George, ___    _ you sing so loudly at such a late hour?

—I am terribly sorry．

A．will            B．may            C．must           D．shall

The traffic is heavy these days．I ______ arrive a bit late, so could you save me a place?

A．can        B．might           C．need            D．must

She searched all the places where she _____ have left her necklace but it was all in vain.

A．might           B．would           C．could          D．should

Don’t interrupt me ,John．       you force me to tell you the truth at the moment?

A．Might           B．Must        C．Should            D．Would

You ______ use my bike on condition that you give it back to me before I leave here．

A．should         B．must         C．ought to         D．shall