—Have you ever _______ any activities during the summer vacation?
—Yes, I've helped in a disabled children's home.
[     ]
A. caught up with
B. taken part in
C. got used to
D. gone on
I have spent little time _____ computer games.
[     ]
A. on
B. on playing
C. in
D. on play
The man took away the dictionary but did not _____. 

[     ]

A. pay it
B. pay for it
C. cost it
D. spend it
He _____ his sister at home because his parents went to Tongren.
[     ]
A. looked after
B. looked for
C. looked at
D. looked like
— Who are you ______, Andy?
— Mum.
[     ]
A. wait
B. waiting
C. waiting for
D. wait for