i don't know when i should leave 同意句i don't know ________ __________ ___________(三空)和we must learn english well.(用necessary改写)it's ______ _______ _______ ________ ________ english well
问题描述：
i don't know when i should leave 同意句
i don't know ________ __________ ___________(三空)
和
we must learn english well.(用necessary改写)
it's ______ _______ _______ ________ ________ english well
答
It`s necessary for us to learn English well.
答
when to leave
necessary for us to learn
正确
答
i don't know when i should leave 同意句
i don't know when to leave.
we must learn english well.(用necessary改写)
it's necessary for us to learn english well
答
when to leave
necessary for us to learn