—Is the letter from your mother?
—Yes. But she ________ the letter herself, because she doesn't even know one word.
A．needn't have written B．can't have written
C．might not have written D．should not have written
The Internet plays an important role in our life. Without the Internet, life ________ quite different nowadays.
A．would be B．will be
C．is D．was
—Hey! Any idea about learning abroad?
—You ________ google the College Board to learn the names of colleges you ________ be interested in.
A．may; need B．can; might
C．will; should D．shall; must
—Is Nick coming by train?
—He should, but he ________ not. He likes driving his car.
A．must B．may
C．can D．need
(2013·东北三校二模)—In case anyone ________ come in my absence, tell him I will be back soon.
—Sure, I will.
A．would B．should
C．will D．shall
(2013·青岛二模)John ________ yet, or he would have telephoned me.
A．mustn't have arrived B．shouldn't have arrived
C．needn't have arrived D．can't have arrived
