Much new high technology has been introduced from America, ________ a great increase in the production of the company.
| A．resulting in | B．having led to | C．contributed to | D．caused |
Your mother will be ____ until she hears you are safe.
| A．upset | B．nervous | C．anxious | D．doubtful |
I often heard the song _____ in English.
| A．singing | B．being sung | C．sung | D．sing |
---- Were all the passengers on the bus injured in the accident sent to hospital?
---- No, _____ only the four who got hurt seriously.
| A．there was | B．there were | C．that was | D．it was |
The elderly need special care in winter, as they are_____ to the sudden change of weather.
| A．sensitive | B．sensible | C．positive | D．curious |
----I’ve looked everywhere, but I haven’t found any black ink.
----Then, I’m afraid there is ________left.
| A．nothing | B．no one | C．none | D．neither |