He whispered to his wife _________ he might wake up the sleeping boy.
| A．so that | B．on condition that |
| C．for fear that | D．so long as |
—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 |
Green organizations are trying to save rain forests that have been _____ by farmers.
| A．created | B．ruined | C．threatened | D．protected |