There will be a talk _____________environment this aftermoon.[ ]

I am twelve and I like English. — Oh, really? I am twelve and Ilike English.

__________ do you exercise every day? 　　　　—More than an hour. 　　[ ]

_____ is it from your office to your home? It’s about 10 minutes’ walk.[ ]

You had better take something to read when you go to see the doctor____ you have to wait.