did not know whether it is weal or pain?
I don't know whether it is true 【or not】.加不加 or not 有什么区别?
英语翻译 it is doubtful whether he knows it or not.
I did not know whether my plan would work or not,but I decid
whether it is true or not ,Idon't care.
i don't know whether it will rain or not .but if it __.i sha
1.I did not know ___ him or not.A.whether to help B.if to he
Do you know ()they enjoy it or not?A if B whether C how D wh
Do you know whether or not it's impolite to smoke during a m
whether we know it or not,each of us lead our lives by an in
l don't know whether l should do it or not.
It is not easy to decide whether a report is true or not.这句英
I don’t know ___________ he is well or not.whether/if,为什么?