We ___________ try our best to fight against pollution.( )
should
may
mustn't
needn't
﹣﹣Alice, could you tell me London?
﹣﹣Sure. Last Sunday.( )
A.when Mr.Smith left
B.when Mr.Smith will leave
C.when did Mr.Smith leave
D.when will Mr.Smith leave
A new international airport in the city next year.( )
A.completesB.is completed
C.will completeD.will be completed
﹣﹣Lucy, is your uncle a teacher?
﹣﹣Yes,he is.He history for nearly 20 years.( )
A.teachesB.has taught
C.is teachingD.will teach
David is a tennis player.He to play tennis when he was six years old.( )
A.beginsB.will beginC.beganD.has begun
﹣﹣Paul, what were you doing at nine last night?
﹣﹣I a movie in the cinema with my friends.( )
A.was watchingB.watch
C.have watchedD.will watch