I heard Lucy ________ happily in her room when I passed her house.
#57432
A
sing
B
to sing
C
singing
D
sings
推荐题目
—Why not ______ an English-English dictionary for yourself?—I have already had ________.
#61083
A
buy; it
B
buying; it
C
buy; one
D
to buy; one
It is necessary for us _______them every day.
#61647
A
looking after
B
to look after
C
look after
D
to looking after
We could see nothing because the lights suddenly ______.
#61680
A
went on
B
went over
C
went down
D
went out