of the students in our class_____going to the summer camp in Beijing next week.( )
A.Two fifths,isB.Second fifths, are
C.Second fifths, isD.Two fifths, are
Either the students or the teacher him very well.( )
A.knowsB.to knowC.knowD.knew
Bejing Opera, an important part of Chinese culture, (have) a history of over 200 years.
The best things in life (be) free, like smiles, love and good memories.