— How old is his father?— He is thirty ________.
#36019
A
years
B
years old
C
old
D
year old
推荐题目
I don’t know when he_____________; when he__________, I’ll tell you. 
#39636
A
come; will come
B
will come; comes
C
comes; will come
D
will come; comes
The koala is _________animal. It’s _________cute.
#36398
A
kind of; kinds of
B
a kind of; kind of
C
a kind; a kind
D
kinds of; kind of