----Mum, it’s so hot and I am very thirty. ---- Here’s the money, Tom. Go and buy _____ an ice ream. 

I love music, and _____ father often takes me to the concert. 

— Alice, is this your brother’s dictionary?— Let me see. Oh, no. ______ is in his school bag.

The room was dark，_________ I turned on the lights．

---     did you go on vacation? ---I went to summer camp.