Rare species in the world, ______ by hundreds every year, must be jointly preserved by all countries, or humans will encounter ecological disaster in the near future.
We hurried to the bus station ______that the bus had already left.
The big- eyed girl came in, ________ a cake with two ________ candles on it.
Some of the students have already learned enough English to ____ a conversation with a native English speaker.
—It’s a good idea. But who’s going to ____the plan?—I think Tom and Mike will.
His parents died, so he had to _____ himself.