________ the earth to be flat, many feared that Columbus would fall off the edge of the earth.
| A．Having believed | B．Believing |
| C．Believed | D．To believe |
You can’t imagine what difficulty we had ______ home in the snowstorm.
| A．walked |
| B．walk |
| C．to walk |
| D．walking |
—Which driver was to blame?
—Why, ____! It was the child’s fault, clear and simple. He suddenly came out between two parked cars.
| A．both |
| B．each |
| C．either |
| D．neither |
—I'm dead tired. I can't walk any further, Jenny.
—____, Tommy. You can do it.
| A．No problem |
| B．No hurry |
| C．Come on |
| D．That's OK. |
I’m sorry I can’t help ___________ the flowers, because I’m busy preparing for the singing competition _____________ tomorrow.
| A．watering; to be held |
| B．water; being held |
| C．to water; held |
| D．to water; to be held |
Mr. Green stood up in defense of the 16-year-old boy, saying that he was not the one_______.
| A．blamed |
| B．blaming |
| C．to blame |
| D．to be blamed |