His father is engineer. He designed such useful machine
#33029
A
a an
B
an a
C
an an
D
a a
推荐题目
If we sit near _______ front of the bus, we’ll have _______ better view.
#33378
A
不填; the
B
不填; a
C
the; a
D
the; the
Avatar (《阿凡达》) is such __________ wonderful science movie that I want to see it __________ second time.
#34621
A
a; a
B
a; the
C
/; the
D
/; a