HE PASSED THE EXAM AS HE WORKED VERYHARD.A. LAZY B. BUSY C. LAZILY...

22. He passed the exam as he worked very

hard.

A. lazy

B. busy

C. lazily

D. early

Read the text carefully, then choose the most suitable answers (A, B, C or D).

Son Doong Cave has become more famous after the American Broadcasting

Company (ABC) aired a live programme featuring its magnificence on ‘Good Morning

America’ in May 2015.

Located in Quang Binh Province, Son Doong Cave was discovered by a local man named

Ho Khanh in 1991, and became known internationally in 2009 thanks to British cavers,

led by Howard Limbert. The cave was formed about 2 to 5 million years ago by river

water eroding away the limestone underneath the mountain. It contains some of the tallest

known stalagmites in the world - up to 70 metres tall. The cave is more than 200 metres

wide, 150 metres high, and nearly 9 kilometres long, with caverns big enough to fit an

entire street inside

them. Son Doong Cave is recognised as the largest cave in the world

by BCRA (British Cave Research Association) and selected as one of the most beautiful

on earth by the BBC (British Broadcasting Corporation).

In August 2013, the first tourist group explored the cave on a guided tour. Permits are

now required to access the cave and are made available on a limited basis. Only 500

permits were issued for the 2015 season, which runs from February to August. After

August, heavy rains cause river levels to rise and make the cave largely

inaccessible.