“ Frank , how far is it from your home to school ? ” “ It 's about _____ .”A. two weeks. B. three hours. C.four miles.
The country life he was used to ____ greatly since 1992.
In our school library there_______ a number of books on science, and in these years the number of them_______ growing larger and larger.
The rivers will become dirtier and dirtier________ we take action to protect them.
I’m sorry to hear that quite two people died _______ the earthquake at the beginning, but later still more died ________ the diseases after the quake last year.
There will be __________one-hour documentary on CCTV8 tonight. ______one- hour documentary takes a close look at the life of tigers in India.