The initial tunnels were just ___________ the surface of the ground. People were transported in carriages, which were ___________ the narrow tunnels by steam engines.
#65162
A
under, broken through
B
below, put through
C
of , gone through
D
beneath, pulled through
推荐题目
 --- Do you think it is hot today?     ---_______ , but not as hot as yesterday.
#64354
A
No, not at all
B
Yes, kind of
C
Extremely
D
Frequently
Through the satellites, we can send and _______ messages.
#73433
A
pick up
B
pick out
C
take up
D
take in