___ we know, in a chemical change, energy cannot be created, ____.

There will be a football match tomorrow. Would you like to go with me? ––If I have time, I _______ with you.

How many students are there in your school?—_______ students, I think.

In our school ________ students can search the Internet for useful information now.

I like to go to the English corner every Thursday afternoon.—______. It’s interesting.