问题补充:
The students discussed the experiment that they would like to see next year.
A. carry out
B. carrying out
C. carried out
D. to carry out
答案:
A. carry out
B. carrying out
(答案→)C. carried out
D. to carry out
解析:考查非谓语动词, the experiment 与carry out为动宾关系所以用过去分词作the experiment的补语。句意:学生们讨论了明年他们想做的实验。