____the sound of the gun,many people came out, ____to see what was the matter.
| A．Heard,running | B．Heard,run | C．Hearing,run | D．Hearing,running |
The two biologists debated ____each other for years ______ the origin of species.
A. with; about B. about; for C. between; over C. to; for
John rushed out in a hurry, ___________ the door ____________.
| A．leaving; unlocked | B．leaving; unlocking |
| C．left; unlocked | D．sang; singing |
Mrs. Brown was much disappointed to see the washing machine she had______went wrong again.
| A．it repair | B．it repaired | C．had repaired | D．to be repaired |
---What is our earth like ________from the moon?
---Well, our earth, with water ________ 70% of its surface, appears as a "blue ball".
| A．seen; covering | B．seen; to cover |
| C．seeing; covered | D．seeing; covering |
I’d rather have a room of my own, however small it is, thana room with others.
| A．to share | B．to have shared | C．share | D．sharing |