—Excuse me. Where is Mr Green’s office?—It’s on ______ floor.
– Susan, you know what? We can have a dog! – Great! But I prefer to have a cat. It is much _______ to look after. A. easy B. easier C. easiest
–______ keep water running when you are brushing your teeth or washing your hands, Jack. – OK. I know we must save every drop(滴) of water. A. Why not B. Please C. Don’t
–Do you often go fishing with your father? –No, _______. I don’t like fishing at all. A. never B. always C. usually
–Who is that little boy in the photo, Oscar? –Oh, it’s me! It _______ when I was five years old. A. was taken B. took C. was taking
It rained heavily, so we _______ stay at home watching TV or surfing the Internet all day. A. could B. had to C. must