Will you waste your time andmoney on that — Certainly ________.

It snowed heavily last night. Is ________ here today— Yes, and _____ of us was late for school this morning.

Smoking is bad for your ．-You’re right．I decide to give it up．

Those citizens who love _________ nature told usthat a lot of precious plants in Mount Jinyun stood in _______ danger.

You needn’ t __________ missing the film. To be honest, it’s not worth watching at all.