About _______ of the books in our school library are written in Chinese.
| A．four-fifth | B．four-fifths |
| C．fourth-fifths | D．fourths-fifth |
- Must I clean the Lable now?
- No, you ____. You may do it later.
| A．can’t | B．needn’t | C．mustn’t | D．shouldn’t |
Chemistry seems to be _____ for me of all the subjects.
| A．difficult | B．too difficult |
| C．more difficult | D．the most difficult |
You won’t feel happy at school ____ you get on well with your classmates.
| A．though | B．when | C．unless | D．because |
- Excuse me, where’s the museum? Is it ______ the library?
- Yes, they are opposite to each other.
| A．next to | B．in front of | C．in the front of | D．across from |
- David, how old is your father this year?
- ———— And we just had a special party for his _____ birthday last weekend.
| A．Fortieth; forty | B．Forty; forty |
| C．Forty; fortieth | D．Fortieth; fortieth |