In summer milk will quickly go bad_____ it is put into a fridge.
—How was your recent trip to Sichuan?—I’ve never had_______ one before.
______ was born being good at all things. As an English learner, you can’t be excellent without enough practice.
—What happened to her _______ that cold winter evening?— I don’t know, and I’m also curious _______ it.
The education of_______ young is always_______ hot and serious topic.
—Excuse me, could you tell me ?—Two. David will go with me.