We can get a lot of useful information on the Internet; ______, the Internet also provides us with a new way of communication.

Professor Smith has written some novels, but he is _____ known for his plays. 

Don’t have the children playing _____ in the sun . It’s ______ hot today.

I might fail, but _______ I insist on doing it. I don’t mind what the result will be.

Tell your brother to come _____, because it's going to rain in a minute or two.