A.appearB.be consideredC.be describedD.remain
A. appear
B. be considered
C. be described
D. remain
A.andB.butC.soD.or
A. and
B. but
C. so
D. or
A.smallB.slowC.largeD.advanced
A. small
B. slow
C. large
D. advanced
A.spaceB.screenC.skyD.map
A. space
B. screen
C. sky
D. map