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IDIOM
To "cave in" means to _______ something.
a. reluctantly agree to
b. be angry about
c. find out about
A. Answer the questions about Cave of Secrets: Then and Now.
1. Detail Clouds are formed in the cave due to its _______.
a. depth b. location c. size
2. Inference Why does the explorer say, "Watch out for dinosaurs"?
a. Dinosaurs used to live in the cave.
b. The cave feels like a different world.
c. The explorers were looking for dinosaur bones.
3. Vocabulary In line 13, to "see light at the end of the tunnel" means to _______ something.
a. imagine b. understand c. be close to completing
4. Detail Cavers successfully explored the whole cave in _______.
a. 2009 b. 2010 c. 2011
5. Reference In line 15, the word "one" refers to _______.
a. exit b. tunnel c. cave
B. CRITICAL THINKING Find the words below in the article. Group them in the chart according to their meanings.
| blocked spectacular dreamy awe-inspiring |
| More Positive | More Negative |
C. Talk with a partner. Do you want to explore Son Doong Cave? Do you think they will finish exploring Son Doong Cave in 10 years?
