takes me several hours my tasks. Because they are too difficult.
AIt , to finish
B. That, to finish
C. It ,finishes
D. It ,finishing
网友回答
(答案→)A. It , to finish
B. That, to finish
C. It ,finishes
D. It ,finishing
解析：句意：我花了几个小时来完成我的任务。因为它们太难了。It takes/took sb. some time to do sth.做某事花某人多长时间，固定句型，故选A。
考点: 考查固定句型的用法。