---Is the notebook Carla’s?---It _____be hers. It has Mary’s name on the cover.
| A．could | B．might | C．must | D．can’t |
If I have a big house, I will------- a pet dog.
| A．take care of | B．find | C．have | D．keep |
what is your brother able--------?
| A．to do | B．do | C．to doing | D．does |
The boy is old enough to ---------himself.
| A．wear | B．put on | C．dress | D．be in |
Jim is tall but Tom is------taller.
| A．very | B．even | C．too | D．more |
Now people like to write articles------computers not--------paper.
| A．on; on | B．at; on | C．in; in | D．with; with |