The Smiths ______ many places of interest since two years ago.( )
A.visitB.have visited
C.visited
Of the three books,the blue one is .( )
A.cheapB.cheaperC.cheapest
﹣Have you seen the book The Old and the Sea?
﹣Yes,I have. interesting it is!I have seen it twice.( )
A.HowB.WhatC.What an
Buses stop when the traffic lights turn red.( )
A.canB.mayC.must
room looks very clean.( )
A.Bob and Dave'sB.Bob's and Dave's
C.Bob's and Dave
﹣ dictionary is this?It's very nice.
﹣I think it is Mary's.( )
A.WhoB.WhoseC.Whom