With a lot of difficulties _______, they went to the seashore and had a good rest.
How many nationalities________ our country __________?
The officials soon realized that, ____, things would get worse.
____ born in Toronto, Canada, the author is most famous for the stories about New York City.
---Do you doubt ___ she has passed the exam? ---I’m not doubtful at all ___she has passed the exams.
Can you show me a case ____ the professor mentioned yesterday?