Where is my little dog?—Itthe back of the house．

Some old things will be _______ in the Science Museum .[ ]

I am a student. I usually _______at 4:30 p.m..

I can not use the new mobile phone. Could you please show me_______.—Sure.

I’m too busy. Could you do_______ to help me?—Of course. I can do_______ for you if you want me to.