Choose the letter A, B, C or D to show the underlined part that need correction: 1. "From the smell" (A) it was "evidence" (B) that the drains "had been"(C) blocked "for several days"(D) 2. If you "have made"(A) any "alternatives"(B) since you "last saved"(C) the document, a "warning message"(D) will appear. 3. "All"(A) the information you "give us"(B) will be "treated as"(C) strictly "confident"(D). 4. It "concerns"(A) many sociologists that inadequate "parents skills"(B) may lead to an increase in the number of "incidents"(C) of "juvenile delinquency"(D). 5. It is "the ASEAN Para Games"(A) that "disabled"(B) athletes have "an opportunity"(C) to have their talents anf efforts "recognised"(D). 6. It was "the year 2014"(A) that Trang An Scenic Landscape Complex "was made"(B) "a"(C) World Heritage Site "by"(D) UNESCO. 7. Drawing on her own experience "in psychology,"(A) the writer successfully "portrayed"(B) a volatile "character"(C) with "dramatic alternatives"(D) of mood. * "........" là từ gạch chân nha, vì mk ko bt gạch chân ở đâu (￣▽￣)"