计算：-30-11-（-10）+（-12）
原式=-30-11+10-12
=（-30-11-12）+10
=-53+10
=-43．
同义句转换。
1. On weekends we often have an English party.
On _______ and _______ we often have an English party.
2. Where are they from?
Where do they _______ _______?
3. Let's go to a movie.
Let's _______ a _______.
4. Mrs Brown is doing shopping now.
Mrs Brown is _______ _______ now.
5. We go to school from Monday to Friday.
We go to school _______ _______.
按捺àn nà
