The manager is talking with his secretary _____ the telephone. They usually keep in touch _____ telephone.
| A．by ;on | B．through; by | C．on; on | D．by ;with |
Some people skip meals or eat only tiny amounts of food and may have conditions ______ rob the body of the nutrients ______ needs to grow and stay healthy.
| A．which…it | B．that…that |
| C．where…that | D．where…it |
Fireworks, ________ of gun powder or flash powder _______ in a tight paper tube, make the big flash or boom effect.
| A．consisting…wrapping | B．consisting…wrapped |
| C．consisted…wrapped | D．being consisted….wrapped |
In the past few years, research has suggested that Vitamin D may increase the level of serotonin（血清素）, one of the key nurotransmitters influencing our mood, and ________it helps to relieve mood disorders.
| A．that | B．where | C．what | D．which |
Chinese must have the largest number of speakers, ________ ?
| A．mustn’t that | B．haven’t they |
| C．don’t they | D．doesn’t it |
Everybody talks about the taste of great food, but hardly _________ about the tongue and
the nose that make the tasting possible.
| A．anybody talks | B．does anybody talk |
| C．talks anybody | D．nobody talks |