Now their talks have reached a key stage________one side must give in to the other

You can’t imagine her________the invitation without thinking twice. [ ]

选出下列选项中与例句句式相同的一句（ ）例句：何以伐为

Is the letter from your mother—YesBut she ________the letter herself，because she doesn’t even know one word

Mum， the visit to the Space Museum is so wonderful.— Really Could you tell me_________