— Why is the chemical plant closed?
— Because large quantities of waste water ______ into the Yangtze River.
| A．has been released | B．is being released | C．was released | D．have been released |
He was so careless that he left _____the door ____.
| A．leaving…unlocked | B．to leave…locked |
| C．left…unlocking | D．leaving…locking |
____ many times, I could not remember her telephone number.
| A．Told | B．Being told | C．Having told | D．Having been told |
Mr. Johnson insisted that he _____ his debts, but nobody believed him.
| A．pay | B．pays | C．paid | D．had paid |
If only I _____ a few days ago！Then I wouldn’t have been feeling so worried now.
| A．looked ahead | B．could look ahead |
| C．were to look ahead | D．had looked ahead |
_____ money, the man was very rich, but he was not happy at all.
| A．In spite of | B．In favor of | C．In terms of | D．In need of |