A DIFFICULTY WHICH NEEDS ATTENTION AND THOUGHT IS PROBLEM / HOÆC CH...

5) - BOI DUONG HSG ANH 9 CO DAP AN
BOI DUONG HSG ANH 9 CO DAP AN

5) A difficulty which needs attention and thought is problem / hoÆc chØ tr¶ lêi ng¾n:

problem.

Part 3: (10 points) 2 points for each correct answer