We'll have a new science teacher next month.
________ you sure about that?( )
A.DoB.AreC.WillD.Have
There ______ a large bowl of jiaozi on the table.( )
A.isB.areC.be
﹣Karl Marx is a great thinker. Do you know ?
﹣In 1818.( )
A.where he was from
B.when he was born
C.how he learned foreign languages
Yuan Longping is a Chinese rice scientist is leading a search to develop "sea rice".( )
A.whoB.whichC.whom
Grandma wants to watch the program legal Report. Please the TV.( )
A.turn offB.turn onC.turn down
Paper﹣making by the Chinese in the Western Han dynasty(朝代).( )
A.is inventedB.invented
C.was invented