It was not until the 18th century that man realized that the whole of the brain was involved in the working of the mind， ？
#64932
A
was it
B
wasn’t it
C
did they
D
didn’t they
推荐题目
Whoever wants to go hiking this weekend, raise your hands, ______?
#64774
A
do you
B
don’t you
C
will you
D
will they
________ does it take you _______ to work from your home every day?
#59915
A
How long; ride
B
How long; to ride
C
When; ride
D
When; to ride