11. All the apples ______ fell down from the tree were eaten up by the pigs.

　　A. which B. / C. that D. they

　　12. I can tell you ______ he told me last week.

　　A. all which B. all what C. that all D. all that

　　13. This is the biggest lab ______ we have ever built in our university.

　　A. which B. what C. that D. where

　　14. Is oxygen the only gas ______ helps fire burn?

　　A. that B. / C. which D. what

　　15. Air, ______ we breathe every day, is around us all the time.

　　A. that B. / C. which D. it

　　16. This is the museum ______ we saw an exhibition the other day.

　　A. that B. which C. where D. in that

　　17. This museum is ______ you visited the other day.

　　A. that B. which C. where D. the one

　　18. This is the museum ______ you saw the other day.

　　A. that B. where C. in which D. in that

　　19. It is the third time ______ late this month.

　　A. that you arrived B. when you arrived

　　C. that you’ve arrived D. when you’ve arrived

　　20. It was in 1969 ______ the American astronaut succeeded in landing on the moon.

　　A. that B. which C. in which D. when

　　答案：11-15 CDCAC 16-20 CDACA

　　相关热点推荐：

　　2013年GCT考试英语单词记忆方法汇总

　　2013年GCT考试语文备考常识考点汇总