—Listen! There is a knock on the door． Who _____ it be?
—It must be Jack． Just now I sent for him．
| A．shall | B．can | C．must | D．might |
. He was determined not to be the first _____________it.
| A．say | B．saying | C．to say | D．says |
We want to know whether the drug has an effect _______________ people's health.
| A．on | B．to | C．with | D．in |
____________their hats into the air， the fans of the winning team let out loud shouts of victory.
| A．To throw | B．Thrown | C．Throwing | D．Being thrown |
Mr. Harris apologized ___the children ____ the lady _____ what they had done.
| A．for; to; to | B．to; to; for | C．for; to; for | D．to; for; for |
When I entered, I found my father ______ on the sofa and ______ in a magazine.
| A．sitting; absorbed | B．sit; absorb | C．sitting; absorbing | D．sat; absorbed |