C项time去掉对不对

C项time去掉对不对 化学 C对不对  be on time arrive school语法对不对 what time will it starts对不对 Wish the rain would just let me be,这句话对不对?be去掉对不对? I only can stay at home.中的“can”不去掉对不对?注意：是“不去掉” at the time=at this time=at that time 对不对? 对不对 wait long time 这个词组对不对,应该怎么改, Good time are for sharing with friends这句话对不对? C语言,这句话对不对  如果d是a,b,c的第四比例项,则有a：b=c：d吗?对不对!理由