单项选择题
A.so B.next C.therefore D.and
23()A.inB.toC.onD.with
单项选择题23()
A.in B.to C.on D.with
22()A.feelingB.senseC.realizeD.think
单项选择题22()
A.feeling B.sense C.realize D.think
21()A.non-smokersB.non-smokersC.non - smoker sD.non - s...
单项选择题21()
A.non-smokers B.non-smokers' C.non - smoker' s D.non - smoker