I just heard____ bank where Dora works was robbed by____ gunman wearing a mask.
| A．the; / | B．a; / |
| C．the; a | D．a; the |
She is always ready to help people in trouble. She thinks it a ________.
| A．business | B．reward | C．pleasure | D．favor |
How pleased the detective was ________ what his customer told him!
| A．hearing | B．heard | C．to hearing | D．to hear |
. This dance is known _________ country music.
| A．performed by | B．performing with | C．to be performed to | D．being performed in |
-----Why did she spend so much time searching shop after shop only for a blouse?
-----Oh, she was very ________ about her clothes.
| A．pleased | B．particular | C．worried | D．curious |
Bad habits, _________ formed, are difficult to get rid of.
| A．and | B．or | C．once | D．but |