Robert______ in three important water polo games so far.
A.is playing
B.played
C.has played
D.had played

Unless we can find new sources of energy, our life will certainly_______
A.be affecting
B.affected
C.be affected
D.affect

In general, my father doesn’t mind _______the housework, but he hates to do the cooking.
A.do
B.doing
C.to do
D.done

Some fish can survive only in salt water,_______ others can live only in fresh water.
A.whereas
B.even if
C.so that
D.since

“Don‘t forget to take _____your shoes when you are in a Japanese house.”
A.in
B.up
C.apart
D.off

The police ordered people to leave the building ______ a bomb threat.
A.because of
B.since
C.in case
D.because

One of the best ways to stay healthy are to do exercises every morning.
A.ways
B.stay healthy
C.are
D.every morning

______(2)
A.lately
B.later
C.latest
D.late

______(3)
A.expensive
B.inexpensive
C.expensively
D.inexpensively

______(5)
A.variety
B.various
C.variously
D.variuosness