Do you think Maths __________ useful subject?

This is a book and ________ book is new.

It’s an________.

–What colour is _____ pen? –It’s black.
A. a                    B. an               C. the

--Here is     800-word report in today’s newspaper. It’s about the National Day military parade.
---It’s        wonderful show I have ever watched.

She said that he got ______useful book..
2.  

We can see __sun in the day, and we can see ___many stars at night.

Jim, ______11-year-old boy, wants to come to China to learn _____Chinese.

— How long did you stay at the party?
— I only stayed there for ________ hour.

______ earth we live on is bigger than ______ moon.