A.They are especially intelligent
B.They are children's favorite
C.They are quite easy to tame
D.They are clean and pretty
A.since
B.which
C.as
D.when
A.providing
B.comparing
C.supposing
D.considering
A.to examine carefully especially in a critical way
B.reject or dismiss as contemptible or unworthy
C.to officially accept or allow
D.to make safe or secure