His advice is useful and makes__________ possible for us to finish the task in half an hour.
A. it
B. it's
C. that
D. this
【答案】A
【解析】句意:他的建议非常有用,使我们有可能半小时内完成那个任务。it它;it’s它是;that那个;this这个。根据句型make it possible for sb to do sth“使某人做某事成为可能”,it是形式宾语,to do sth作为真正宾语,故选A。