of the students of our school girls.
A. Two-third; are B. Two-thirds; is C. Two-thirds; are D. Second-three; are
The air in this area has a strange smell, but we it.
A. polluted; used to B. polluted; are used to C. polluting;used to D. polluting; used to
---How can my brother play the piano well?
---He as often as possible.
A. need practising B. need to practise C. needs practise D. needs to practise
Mr. Jiang didn’t know to do with his robot and I don’t know to deal with my pet.
A. how; how B. what; how C. what; what D. how; what
---Lily, why are you still here? School is over for half an hour.
---Because I ____________ my task yet. I still need one more hour.
A. won’t finish B. didn’t finish
C. haven’t finished D. hadn’t finished
I don’t think easy for us to work out this problem on time.
A. this is B. it C. that D. that is
