if i had ever been to Beijing
D这里表示肯定回答,have to有“不得不”的意思和肯定语气
D “没必要” 的意思
C固定搭配 You'd better not to do something."not"在better和to中间
A捡起来
B speak是动词,用副词修饰.kind polite friendly都是形容词,(friendly:友好的)所以用B
if i had ever been to Beijing
D这里表示肯定回答,have to有“不得不”的意思和肯定语气
D “没必要” 的意思
C固定搭配 You'd better not to do something."not"在better和to中间
A捡起来
B speak是动词,用副词修饰.kind polite friendly都是形容词,(friendly:友好的)所以用B