—What’s        favorite subject?—My favorite subject is math.

--What’s your brother’s name?--_____ name is Dave．

--Two Nanchang Evening papers, please!--Sorry, sir. Only one left. Would you like to have       ？

The teacher tells us not to_________[lɑ:f] at others.

—How many students are there in the classroom? —  　　　．They are all in the lab．