Kate knows little about the NBA stars because she______ watches basketball matches.

____ the stars are, the smaller theylook, as is known to all the people.

Bicycling is good exercise, ________, it does not pollute the air [ ]

What are they up toIt’s so noisy—Some students________a party

30. It was once called the Sea of Bamboo, but now only one fifth of the area ______ covered with bamboo, and sixty percent of other plants ______ taken the place of the bamboo.