1.en the b--------- rang,all the students came into the clas

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1.en the bell_________ rang,all the students came into the classroom
2.e tall building was pulled down by typhoon________
3.must keep silent______ when you are in the library
4.Which___flight___ going to take off?
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5.I think elephant is one of the biggest animals on earth____
The girl gave the flowers to the two ___heros____(hero)
He ___flied____(fly) to Americe last Sunday.
Do you know the Chinese ____meaning______(mean) of the word?
We ___heard____(hear) him singing in the next room when we passed.
Please keep the window ____closed_____(close).It's cold outside