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
—Do you know who invented Chinese chess?—Sorry. I don’t know. Let’s ______ the Internet ______ . 
#53268
A
search; find out it
B
to search; to find it out
C
to search; to find out it
D
search; to find it out
It’s not polite to make fun of others when they are in trouble . 
#58615
A
have fun
B
enjoy fun
C
laugh at
D
look for fun
When did your father _______ your mother?
#54436
A
marry
B
marry to
C
marry with
D
get married