Is ________ some German friends visited last week?
| A．this school | B．this the school |
| C．this school one | D．this school where |
He is a man of few words, and seldom speaks until _______ to.
| A．spoken | B．speaking | C．speak | D．be spoken |
Though I have often heard this song _______. I have never heard you _______ it.
| A．being sung, sang | B．sang, singing | C．sung, sing | D．to be sung, to sing |
“Why was a special meeting called?” “______ a new chairman.”
| A．Choose | B．Choosing | C．To choose | D．Chosen |
Finding her car stolen, _______.
| A．a policeman was asked to help | B．the area was searching thoroughly |
| C．it was looked for everywhere | D．she hurried to a policeman for help |
A cook will be immediately fired if he is found _______ in the kitchen.
| A．smoke | B．smoking | C．to smoke | D．smoked |