Wind power is an ancient source of energy ________ we may return in the near future.[ ]

─ I don’t think cycling is as exciting as climbing. ─ That’s because you can’t ride well. , both of them are interesting.

the crowded bus ,who was dressed in a black suit and waved to a woman

TheChinese government has made great efforts to______thegapbetween the rich and the poor, but has not achieved obvious results

The weatherman on the news said it would rain later this afternoon.— Well, I ____ take my umbrella along with me today.[ ]