—Kathy and her sister are so alike.—I can’t tell one from ____.
– What’s left in the bottle standing on the table? – ________
– Who did you see playing in/on the playground? – ________
– How many students did you see playing in/on the playground? – ________
Of the most popular films in China this year, ________ was produced in this city
To keep our world a clean tidy home, we must not throw wastes ________