--- Where is Mr. Lee at the moment?--- He _____ chess with his neighbour, but I’m not sure.
When shopping, keep your eyes ______for those energy-saving machines.
Mary, how old are you this gear?_______. And My parents just had a party for my ______birthday last monty.
My son wants a pet dog for long, but I have no time to buy _____for him.
Mrs Zhang has taught ______math for three years and she teaches very well.
The rest of students in the classroom ______my classmates.