Vitamin D helps our bodies make a special chemical,and this special chemical, ____ , affects our brains,making us feel happy.
#28171
A
in turn
B
in particular
C
in advance
D
in short
推荐题目
In those days, we had no phones, so we have to keep in touch _________ writing often.
#28930
A
with
B
of
C
on
D
by
A girl on the bus begin to sing a pop song and soon all the other students _________.
#26283
A
majored in
B
joined in
C
came in
D
handed in
American English has changed ________ time．There are several reasons ________ this.
#26725
A
over; for
B
for; with
C
in; of
D
during; about
I have offered to paint the house ____ a week’s accommodation.
#27337
A
in exchange for
B
with regard to
C
by means of
D
in place of