Sinking in the cheers of people, David walked off the stage, tears dropping he could stop them．
| A．after | B．when | C．until | D．before |
______ all the possibilities, I really believe that I’d prefer to make any change now.
| A．Considering | B．Considered | C．To consider | D．Consider |
.Nobody could______it when the bull broke into the shop and attacked two customers with its horns. The others just hurried away from it.
| A．make | B．help | C．aid | D．assist |
He appears ______ a long time. He is impatient for my arrival.
| A．to wait | B．to be waiting | C．to have waited | D．to have been waiting |
Every device ______in the plane must be designed and made with great care so as to make sure that nothing goes wrong in operation.
| A．fitted | B．to be fitted | C．fitting | D．being fitted |
He left home early only______he was late as he went a wrong way.
| A．found | B．to find | C．finding | D．being found |