Parts of the cave have been badly affected by rain and           to the air.
#5758
A
express
B
excavate
C
exposure
D
expand
推荐题目
Such people shouldn’t be_______ into the party.
#6864
A
permitted
B
admitted
C
allowed
D
agreed
This little girl can speak many ___.
#6785
A
language
B
languages
C
sentence
D
word