---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 |
You seem ___________. What are you____________?
| A．worries; worrying about | B．worry; worried about |
| C．worried; worrying about | D．worried; worry about |
These broken pieces of plates don’t fit together, they ___________ parts of different ones.
| A．can’t be | B．can be | C．mustn’t be | D．must be |
_________Jimmy knows he may fail, ________he will still try.
| A．Though; but | B．Though; / | C．But; though | D．But; / |
Daniel was ___________ a bad mood and couldn’t find anybody to ___________.
| A．on; tell about | B．on; talk with | C．in; talk to | D．in; tell with |
My mother asked me to go shopping yesterday. In this sentence" to go shopping" is_____．
| A．Object | B．Predicative | C．Adverbial | D．Object complement |