We can’t put off _____ a plan .
----I lost the chance to take part in the speaking competition.----__________________!
----By the time I realized it was a hoax, it _________ me_________ so much.----Poor you!
----Whose is that book?----It _________ belong to Lucy. Her name is on it.
----He is ____________ the cleverest student I've ever taught.---- Yap! And he is always patient and kind-hearted.
----Smoking should not ____________ in school.----I agree. It’s bad for our health.