It can be inferred from the 5th and 6th paragraph that _____.
A. the volunteers not given $5 or $20 spent their own money on themselves
B. those who spent the money on someone or something else felt happier about it
C. the volunteers were given $5 or $20 as a reward for the experiment
D. half of the volunteers could spend the money as they liked
There _______ nothing more for discussion, the meeting came to an end half an hour earlier.
A. to be 13. to have been
B. being
C. be
How can I ever concentrate if you _______ _____ me with silly questions?
A. have...interrupted
B. had ...interrupted
C. are.., interrupting
D. were.., interrupting
Chris became more and more ______ (panic), as the day of the examination drew near.