His father is __________ engineer and he works __________ research.
#49406
A
an, on
B
an, with
C
the , on
D
a, with
推荐题目
They live_____ the _____ floor.
#46447
A
on, nine
B
in, ninth
C
on, ninth
D
on, nineth
There is a bridge __the river and __ the bridge many people are walking.
#48084
A
over; over
B
on; on
C
on; over
D
over; on
 If you have_______, you should_______ your friends.
#47662
A
happy something; share it to
B
something happy; share it to
C
something happy; share it with
D
happy something; share it with