1. Only ______experienced___________ pilots are allowed to fly large passenger planes. (experience) trước noun là adj -> điền adj
12. The play we saw last night at the theater was _______embarrassingly__________ bad. (embarrass)
trước adj là adv -> điền adv
13. He suffered loss of _____memory____________ for weeks after the accident. (memorize)
sau of là noun -> điền noun
14. These people remain under the ________protection_________ of the United Nations. (protect)
 trước of là noun -> điền noun
15. New scientific ______discoveries___________ are being made all the time. (discover)
sau adj là noun, có are -> danh từ số nhiều
16. The holiday provided many ______memorable___________ moments. (memory)
trước noun là adj -> điền adj 
17. I found the whole evening intensely ________embarrassing_________. (embarrass)
sau adv là adj -> điền adj 
18. I was _________embarrassed________ about talking to my parents about it. (embarrass)
sau tobe là adj -> điền adj
19. All the countries should act to stop the _______destruction__________ of rainforests. (destroy)
trước of là noun -> điền noun
20. A child of his age is too young and _____unexperienced____________ to recognize danger.
(experience) có and -> cùng chức năng với "young" -> điền adj