16. When he came to himself , he found that the power supply in his room  _________

A£®was cut out        B£®had been cut out       C£®was cut off        D£®had been cut off

17. In the coming Olympic Games , there will be ten more new events, _________ more athetes will compete for medals .

A£®that               B£®where               C£®which             D£®when

18. It is in the gym ________ was built last year ________ I work out regularly after work .

A£®that; that          B£®where; that            C£®which; where     D£®that; where