—I didn’t know the answer in the math class. What about you?—I don’t, _______.
—Mike, it is the ________ time in ______ days that you’ve made the same mistake.—Sorry, sir. I’ll be more careful next time.
The restaurant is very popular in the city because it has ___________delicious food __________ good service.
Last night, the wind blew so _____________ that some roofs were blown away.
—What’s the low-carbon life style like?—Save __________ energy, produce __________ carbon.
—Have you found your bicycle?—No, I haven’t. But my parents promised to buy a new ________ for me.