Let us aim ______ producing something original.

(A) on
(B) at
(C) to
(D) for
(E) in

Q. There were thousands of people ______ the stadium.
(A) at
(B) in
(C) over
(D) on
(E) upon

Q. Bad health robbed her ______ happiness.
(A) out
(B) over
(C) of
(D) on
(E) at

Answers:
1. (B) at
2. (A) at
3. (C) of