It is a long time since I saw my sister .A Why not visit B Why not to visit C Why not visiting D Why do not visit .为什么只能选A 省略回答 必须是 A么 D 不属于省略句么

it is a long time和it is long time 的区别 it has been a long time. what is up _____?It's seven A How old is Ben B What time is it C How much si it _____?It's seven A How old is Ben B What time is it C How much si it 英语翻译it is difficult,and it is painful,and it takes a long long long long time,这句怎么翻译? 16 days is a long time ,but it is very important to us chinese Is the dog still a--- it doesn’t move for a long time.----a .这个单词? Is the dog still a--- it doesn’t move for a long time.----a .这个单词? it is a time it took a long time 歌词 it's a long time什么意思 It's raining for a long time? You find it a long time Has it beensnowing for a long time? It was quite a long time It Will Take A Long Long Time 歌词 It is a long time that they take bath.最后加一个for It is for a long time that since i left you.这句话有语法错误吗