lll,
1 - C : on 2 - B : yet 3 - C : deforestation 4 - D : disappear 5 - A : have
6 - B : funny 7 - C : is knocking 8 - B : will answer; has 9 - B : instead of 10 - A : because
11 - C : more much 12 - D : longest - but 13 - C : in 14 - A : must
15 - B : make 16 - B : Although 17 - C : best 18 - A : environmental
19 - A : travelled 20 - A : electricity 21 - D : the largest 22 - B : better
23 - A : What is My Khe Beach in Da Nang like?
25 - B : has left 26 - A : so 27 - C : stop
28 - B : went 29 - D : to starting 30 - C : polluted
CHUCBANHOKTOT ^^