"Is Mary from New York City " "I don't know _______."
When you are driving on this road, you have to limit your speed _____ 60 miles per hour.
—What do you mean. There are only ten tickets? —There ______ be twelve.
Jane is said _______ an opera singer in her youth.
It is in Qingdao ______ you are going to pay a visit to ______ this kind of washing machine is produced.
The boy who was caught ________ in the examination room will be punished by the teacher.