题目

改写句子 1. she, mail the letter, as soon as, she, buy a stamp (make a sentence) _________________________________________________________________________ 2. They used to live in the countryside. Neg. _____________________________________________________________________ Q.    _____________________________________________________________________3. He improved his English by listening to English songs. Q.    _____________________________________________________________________4. She has already finished that report. Neg. _________________________________________________________把一个平角按5：2：3分成三个角，其中最大的角是______．