this dress is _____that.( twice,as...as,expensive)
1.the earth is _____ than the moon.
A.as 49times big as
B.49 times as big as
C.49 times as bigger as
D.as big as 49 times
2.of the two toys,the child chose _____
A.the expensive one
B.one most expensive
C.a least expensive
D.the most expensive of them