—Will you give me a hand? I have some trouble_______ the scientific problem.—Don't worry. I'll try my best to help you _______.
--How many people are there in the city? --_______.
What do you do _______ the night _______ October 31st?
The news is very _______. She gets ______when she hears it.
Mr Smith _______ exercises. It’s not good for his health.
I have a cat, _______ name is Mimi.