你看到一种动物,想知道是什么,可以问: A.What’s this? B. Good morning.
( )—Excuse me, Jack. Where is the bus? —___________.
( )—What is thirty and twelve? —It’ s ___________.
( )—__________your brother here? —__________,he isn’ t here.
( )—__________the bike? —Look! It’ s under the tree.
( ) Jim and I__________ students. We__________in the same class.