一道紧急初一英语题！

1 We have the students of the (twenty-first) certury(世纪）.
2 Liu Zhong is in his (third) year at No.1 Middle school.
3 They alaways go to the library (twice)a week.

根据句意及首字母提示写出完整的句子。
1 Our teacher often tells us that work must come (first).
2 There are (fourty) students in our class twenty-two boys and twenty-gils.
3 What's (twenty-two) plus seven?It's thirty.

1.21st
2.third
3.twice

1、21st
2、third
3、twice
fast forty twenty-three

1.twenty-first
2.third
3.twice

twenty-first
third
twice

first
forty-two
twenty-three

用所给词适当形式填空
1 We have the students of the twenty-first(twenty-one)certury(世纪）.
2 Liu Zhong is in his third (three)year at No.1 Middle school.
3 They alaways go to the library twice (two)a week.
根据句意及首字母提示写出完整的句子。
1 Our teacher often tells us that work must come first.
2 There are forty-two student