A professor from _______university said that he would think out _______unusual way to face the serious problem .
#40081
A
a ; the
B
an ;a
C
a ; an
D
an ;the
推荐题目
The train is going _______ the tunnel. Then it will go ______to the center of the city.
#36769
A
through; towards
B
through; straight 
C
across; towards
D
across; straight
John often goes to school _____.
#41114
A
by foot
B
on foot
C
on feet
D
by feet