Is this your sister’s key, John?— No, it isn’t. ______ is in the bag.

Can I help you?— I have few friends here. Could you give me _________ advice?

Qingdao will spend about 80,000,000,000 yuan in building a bridge _____ the sea. [ ]

Come on, children! Help _____ some chicken.

Many boy students think math is _____ English.–I agree. I’m weak in English.