---What number should appear next after eighty-one?
---It’s ___________.
| 3, 9, 27, 81, |
A. two hundreds and forty-three
B. two hundred and forty-seven
C. two hundred and forty-eight
D. two hundred and forty-three
She said she had some trouble ___________ her homework.
| A．finish | B．finishing |
| C．to finish | D．Finished |
---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 |
---What’s wrong with you, Dave?
---My homework can’t be __________ on time because I’ve left it at home.
| A．given out | B．got over |
| C．showed up | D．handed in |
---________ fine day! Let’s go hiking together. ---Good idea!
| A．What | B．What a | C．How a | D．How |
---What do you think of the twin sisters?
---They are quite different. One is outgoing, __________ is very serious.
| A．another | B．the other |
| C．the others | D．Others |