__________ fishes are usually more expensive than __________ ones, because it's not easy to keep them __________.
| A．Alive; frozen; live | B．Living; freezing; live |
| C．Live; freezing; living | D．Live; frozen; alive |
I can't believe what he says because he is _______ changing his mind. .
| A．regularly | B．steadily | C．suddenly | D．constantly |
Linda had her luggage________ an hour before her plane left.
| A．check | B．checking | C．to check | D．checked |
Could you drive me to the bookstore at noon if________?
| A．it's convenient of you | B．you are convenient |
| C．it's convenient to you | D．you will be convenient |
In my opinion, it's the flying birds rather than the pilot that________for the air crash.
| A．are to blame | B．is to blame | C．is to be blamed | D．are to be blamed |
The teacher didn't like ______composition written by the new student because it didn't make
_______ sense.
| A． the;a | B．the;/ | C．a; t he | D．a;／ |