Mr. Smith is ______old _____ anything. He has to ask others to look after him.A. too; not to do B. too; to do C. so; not to do
Tom is a good boy and he writes _________ in his class.
—Which colour do you like _______, blue or green? —Blue.
—______ you help me mend the radio? —Yes, I can.
There is ______ wrong with this computer. It doesn’t work.
Parents often ask their children _____ their Internet friends because they may be in danger.