It was________great shock to the world that two aero-planes crashed into ______World Trade Center in New York o September 11th, 2001.
| A．a; / | B．a; the | C．the; the | D．/; the |
This cake is very sweet. You _____ a lot of sugar in it.
| A．should put | B．could have put | C．might put | D．must have put |
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 |
I have lost one of my gloves. I _____ it somewhere.
| A．must drop | B．must have dropped |
C．must be dropping | D．must have been dropped |
— Write to me when you get home. — __________.
| A．I must | B．I should | C．I will | D．I can |
If I hadn’t stood under the ladder to catch you when you fell, you _____ now.
| A．wouldn’t be smiling | B．couldn’t have smiled | C．won’t smile | D．didn’t smile |