20, A
21, C
22, D
23, B
24, B-> take care of ( trông coi, chăm sóc)
25, C-> had advised( Câu ĐK loại 3: If+S+Had P.P, S + would/could/should+have+P.P)
26, B
27, D
28, B
C1: I met the last people at the accident yesterday.
C2: This novel was written by an American writer.
C3: The only destroyed stores in the fire have now been built.
C4: Jonathan was a popular businessman who has ten companies.
C5: That is the picture which my friend looks at all times.
C6: The girl is now being taken to the hospital was injured in the accident.
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Chúc bạn học tốt :3 Mình xin CTLHN+TIM Ạ!!!!