---The students sitting at the back can’t see the blackboard________. ---Why not_________ them move a little forward?
Jim asked Ling Fenghis pet dog while he was away.
—Would you like tea or coffee? —_________ is OK.I really don't mind.
It is my favorite book which is about _________.
China is developing _________ of all the countries in the world.
A moment, please.I'm checking if Mr. Smith _________ free tomorrow.