I’m not sure _______my friend can come here or not tomorrow.A. whether B. when C. if
man in a black hat is my PE teacher. He often playsfootball with us.
-----Do you know _________? ------Yes, I do. He went by skateboarding!
-----We can use QQ to chat with each other on the Internet. ------Really? Will you please show me ________it?
I won’t be able to understand what you say _______you speak too quickly.
________the English club at school is the best way to improve our English.