The change was so _____ that we hardly noticed it.
#19621
A
actual
B
frequent
C
gradual
D
grateful
推荐题目
Some parents want to shelter their kids from every kind of danger, real or         .
#18838
A
having imagined
B
being imagined
C
imagined
D
to be imagined
Which food is called ________ food, milk, sugar or beans?
#19118
A
energy-given
B
body-building
C
energetic
D
protection