When you are speaking on the phone, you must convey the impression that this is an important conversation to you, ______ you are treating with great significance.
| A．one | B．the one | C．that | D．it |
— You look puzzled at the news.
— Yes. I just can’t imagine _____ he could have done such a thing.
| A．what | B．how | C．whether | D．Where |
—How are things going, Jenny?
—They have set out to deal with the present situation ______ they think deserves their immediately attention.
| A．what | B．where | C．when | D．which |
Little _____ about her own safety, though she was in great danger herself.
| A．did Mary care | B．Mary did care |
| C．Mary does care | D．does Mary care |
—The old store enjoys a good reputation in this area.
—Can’t agree more. There are very few. _____, complains about their service.
| A．if any | B．if ever | C．if so | D．if anything |
The flu is believed ______ by viruses that like to reproduce in the cells inside the human nose and throat.
| A．to be caused | B．to have caused | C．being caused | D．causing |