Which lesson is _______, this one or that one?
| A．difficult | B．much difficult | C．more difficult | D．the most difficult |
You can’t get to the island____by boat.
| A．more than | B．other than | C．rather than | D．less than |
Computers,_______ destroying jobs, can create employment.
| A．far away from | B．faraway | C．far from | D． by far |
We don’t know how the law works until we have_____.
| A．tried out on it | B．tried out for it | C．tried it out | D．tried out it |
Many difficulties have___as a result of the overuse of coal.
| A．risen | B．arisen | C．raised | D．arose |
Though ill, he hasn’t____smoking.
| A．quit | B．stop | C．stopped | D．forbidden |