During 1700s, Philadelphia developed into the wealthiest city in the American colonies.
The phrase "keeps sellers on their toes" in the passage mostly means "______".
Education in many countries is compulsory________the age of 16.
Supporters of free-market globalization point out that_____________________ .
Stephanie: "Oh, no! I left my book at home. Can I share yours?" Scott: "______ "
The Lake District,____________________ was made a national park in 1951, attracts a large number of tourists every year.
Standing on the tip of the cape,____________________ .
Tom: "___________________ " Mike: "I won't say no!"
We must push the piano to the corner of the hall to_____________________ our party tonight.
We all agree that she is____________________ student in our class.
I am sorry I have no time at present to____________________ detail of our plan.