___ by thick bamboo and high forest, the ancient city hadn’t been discovered until the 1990s.
This is the largest clock in the world, __________ the minute hand is six meters long.
I have called the station and they told me the next train for Dalian __________ at 3:10.
Some day you'll ________ all of this and say, "Hard as it is, it makes me who I am today. And this is a good thing. "
In the rainforest of the Amazon, 50 to 150 plant species ________ every day.
Mr. Smith was __________ of the __________ speech, so he began to read a novel.