so do i

A / C / D / B / C 

( x - 3 ) ( x - 5 ) = 0 => x = { 5 , 3 }

cgi d =))

nhanh thế =))))

( 1 => 10 : đã làm )
Câu 5 ,6 sửa đúng không nhỉ 

5.She had an unpleasant experience.............while........ she was in thai lan

6.the committee rejected the proposal............because.......they did not think it waspractical