We ______ the difficulty together, but why didn’t you tell me?
| A．should face | B．might face |
| C．could have faced | D．must have faced |
Sorry, we don’t allow ______ in the lecture room.
| A．to smoke | B．smoke | C．smoking | D．to smoking |
—Would you prefer to attend a private tutor?
—I’d rather _____ for a class than _____ a tutor.
| A．sign up; have | B．to sign up; have |
| C．sign up; to have | D．to sign up; to have |
The father as well as his daughters _____ skating on the freezing river every Sunday afternoon.
| A．go | B．goes | C．is going | D．are going |
Martin was_____ to win the 100-meter race, but he fell to the ground and missed the chance.
| A．likely | B．possible | C．probable | D．maybe |
The roads have ______ because of people’s dependence on cars.
| A．jammed | B．been jamming | C．to jam | D．been jammed |