I’ve kept up a friendship with a girl whom I was at school ________ twenty years ago.
#28559
A
till
B
with
C
about
D
since
推荐题目
Lately some scientists are experimenting ___________ white mice to ____________ this kind of medicine.
#27470
A
on,try on
B
with, test on
C
on ,test out
D
with,carry out
I saw a woman running toward me in the dark.Before I could recognize who she was，she had run back in the direction______ she had come.
#28709
A
of which
B
by which
C
in which
D
from which
Parents need to teach their children how to behave______.
#29147
A
in public
B
in company
C
in peace
D
in trouble