Vitamin D helps our bodies make a special chemical,and this special chemical, ____ ,
affects our brains,making us feel happy.
| A．in turn | B．in particular |
| C．in advance | D．in short |
In order to finish the work time,the man in charge decided tosome more workers.
| A．give up | B．take on | C．look after | D．find out |
I think you should go back to yourplan,which is much more practical than the present
one.
| A．oiginal | B．random | C．abstact | D．potential |
－prlfessor, do you have somethingat this moment?
－No,thanks.I’llcall you if there is any.
typing B．typed C．to type D．to be typed
The farmers are in bad need of rain,but a (an)large amount of rainfall will cause Floods.
| A．Eventually | B．constantly | C．gradually | D．extremely |
My toothacheme. I thought it was going away, but it is getting worse now.
| A．kills | B．is killing | C．has killed | D．killed |