Look at the sign! It says “No Smoking!” You ________ smoke here. It’s dangerous.
We _____ in this pool when we were young, but now it _____ fish.
I study math by ____ lots of exercises.
_______ honest boy he is ! We all like him.
–Is there ______ in today’s newspaper? --Oh, no. There _____ only some news in it.
–Do you know this boy?He works really___. –Yes, I can ___ see him play. He always studies.