Please do me a favor—________ my friend Mr.Smith to Youth Theater at 7：30 tonight.
| A．to invite | B．inviting |
| C．invite | D．invited |
This medicine will him of his cough.
| A．recover | B．cure | C．treat | D．heal |
Professor Hawking stepped into the office he knew that there was no hope.
| A．Unless | B．Now that | C．The moment | D．Although |
Under a big tree _______, half asleep.
| A．did sit a fat man | B．a fat man sat | C．did a fat man sit | D．sat a fat man |
Generally speaking, when___ according to the directions, the medicine has no side effect.
| A．taken | B．taking | C．to take | D．to be taken |
_______ in her skirt, the little girl tried to make herself ________ at the party.
| A．Dressed; notice | B．Dressing; noticed | C．Dressed; noticed | D．Dressing; noticing |