This is not my car. It _________ one of my friends.
.Who did the manager of the company ________ the report?
Australia is such a splendid country that we’ve decided to stay for _____ two weeks.
_____ a certain doubt among the workers as to whether he could finish the task in a short time.
_____ he met with the terrible difficulty did he realize the importance of my advice.
Knowing _____, as a matter of fact, one shouldn’t know is a terrible thing.