Weareallconcerned_______hersafety.
A、about
B、in
C、of
D、with
Mywalletisnowheretobefound.I_____itwhenIwasonthebus.
A、mustdrop
B、shouldhavedropped
C、haddropped
D、musthavedropped
Thefurnitureinherbedroomisquitedifferentfrom________inthelivingroom.
A、that
B、it
C、one
D、which
A、氧流量05-1L/min，氧浓度不超过40%
B、氧流量2-4L/min，氧浓度不超过50%
C、氧流量4-6L/min，氧浓度不超过60%
D、以上都不是
JeansaresohotthesedaysthatbignamestarsappearonTVadvertisingfortheir______brands.
A、favorite
B、unique
C、permanent
D、intimate