Taking drugs has become part of every sport _________ athletes seek to achieve beyond their natural limits.
| A．which | B．that | C．who | D．where |
---Where will you start your work after graduation?
---Mmm, it's not been decided yet. I ____ continue my study for a higher degree.
| A．need | B．must | C．would | D．might |
I wrote to my parents once a week,____ I was too busy with my teaching work.
| A．it | B．unless | C．when | D．as |
However, at times this balance in nature is disturbed, ____ a number of possibly unforeseen effects.
| A．lying in | B．calling in | C．taking in | D．resulting in |
--- He has to finish the experiment today. He must be in the lab,____?
---That s quite possible.
| A．mustn't he | B．won't he | C．doesn't he | D．isn't he |
Let us suppose that you are in____ position of____ parent. Would you allow your child to do such a thing?
| A．a; a | B．a; the | C．the; a | D．the; the |