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[单选题]
Bicycling is a good exercise; (), it doesn’t pollute the air.
A.however
B.therefore
C.moreover
D.though
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A.however
B.therefore
C.moreover
D.though
A.is good to
B.is good for
C.are good of
D.are good for
A. a good news
B.many good news
C.some good news
D.a few good news
A.so a good experience
B.such a good experience
C.so good an experience
D.such good an experience
A.is a good conductor
B.is a good insulator
C.are good conductors
D.are good insulators
A.either
B.neither
C.too
______ to ask him the way? He is also a visitor.
A.What ever good it is
B.However good it is
C.What good is it
D.How good it is
Did you have a good()to Europe?
A.trip
B.tour