---- Is that Mr. Green?
--- Impossible. He has gone to America. It ------be him.
| A．could | B．must | C．can`t | D．might |
—Jack is a（n）________young man．
—That’s true．He always feels nervous when he speaks before people．
| A．friendly |
| B．shy |
| C．honest |
| D．lively |
Lions like to eat________，but koalas like to eat________．
| A．meat，leaf |
| B．meat，leaves |
| C．meats，leaf |
| D．meat，leafs |
Mary was looking forward to________to Kate’s birthday party．
| A．inviting |
| B．being invited |
| C．invite |
| D．be invited |
Kate’s dad is getting old．She will go back home to see him________it is convenient．
| A．because |
| B．whenever |
| C．although |
| D．unless |
The teachers encourage their students to________the problems by themselves，and in this way students can enjoy success．
A．give up
B．work out
C．look through