He____know the answer, but I’m not sure.A. maybe B. may be C:may D. must
People who eat a balanced diet should be healthier than those who only eat biscuits and hamburgers, ______?
My ______sister who works in the bank is two years______than I.
This park is less______than that one.
He always looks ______.Now he’s looking______at his new drawing.
When I was working on a Maths problem, a good idea went ______my head.