I don’t like any humor in this serious speech because I can’t think of any circumstance ______ this would be beneficial or useful.

It’s my mother’s birthday tomorrow. I will buy _____ a CD as a present.

32Once he starts a job, he won’t stop ______ it’s finished

e two bags, which one do you prefer-__________bigger one. It’s_______ most beautiful one,I think.

________ is surprising to us is that Tom, for _______ English was once boring, can speak English fluently as though he were a native speaker.