____ he was fired by the company is ____ he didn’t work hard.

    A. What; because                  B. Why; because

    C. Why; that                      D. That; because

We see the lightning ____ it happens, but we hear the thunder later.

      A. the moment                     B. for the moment  

       C. at the moment                  D. in a moment

No sooner ____ to shine ____ it clouded over again.

    A. the sun had started; than

    B. had the sun started; than

    C. the sun started; when

    D. did the sun started; when

Is this the very factory ____ he visited last month?

    A. which              B. that               C. where          D. in which

The river, ____ are covered with trees, is very long.

   A. which banks                       B. of which banks

    C. whose the banks                 D. the banks of which

“Show me your permit, please.” “Oh, it’s not in my pocket. It ______.”

    A. might fall out               B. could fall out

    C. should have fallen out    D. must have fallen out

The World Wide Web is sometimes jokingly called the World Wide Wait because it _________be very slow.

A. should                    B. must                       C. will                          D. can

— Who is the girl standing over there ?  

— Well, if you _____ know, her name is Mabel.

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

He paid for a seat, when he ______ have entered free.

A. could         B. would        C. must        D. need

Naturally, after I told her what to do, my daughter _____ go and do the opposite !

A. may       B. can          C. must         D. should