:Again,Please! 一、单项选择。 ( ) l. Jenny is _________ out of the window of the train. A. look B. looking C. looks ( )2. What _________ you doing? A. am B. is C. are ( ) 3. This man is _________ the train. A. in B. on C. at ( ) 4. Would you like __________ tea? A. some B. any C. / ( ) 5. Everyone __________ tired and hungry. A. am B. is C. are 二、给下