Half its beauty and usefulness (A)/ knowledge would lose (B)/ without hard toil (C)/ if we could acquire it (D) 

Use a fairly good quality cotton (A) as the thread is inserted in the needle's eye (B) / or nylon thread so that (C)/ the strands do not unravel (D) 

A get some peace(A)/ he left home(B)/ his parents could (C)/ in order that(D) 

coal as a fuel(A)/ in place of wood(B)/ during this period (C)/ people were beginning to use(D)  

try to use the camera(A)/ carefully(B)/ before you(C)/ read the manual(D)

are not allowed (A)/ to change to a different class (B)/ unless there is a special reason(C)/ students(D) 

she had taken a seat(A)/ I put a woollen rug(B)/ after (C)/ over her knees.(D)

undoubtedly to be(A)/ our aim(B)/ it ought (C)/ to raise the minds of the natives.(D)