Important sentences are often marked ______ different colours. 
#49424
A
in
B
on
C
about
D
by
推荐题目
Thanks for _________ my friend to your party.
#49261
A
invite
B
to invite
C
invites
D
inviting
It’s selfish ________ him ________ the cakes with others.
#49473
A
for; to share
B
of; not share
C
of; to not share
D
of; not to share
My sister has to study ___ her Chinese test ___ Tuesday morning.
#50448
A
at, on
B
on, for
C
for, in
D
for, on