15. What does the picture say?

A.        We should place notes on the solar panel.

B.        We should use solar energy to save money.

C.        We should spend more money on solar panel.

D.        We should buy solar panels with a lot of money.

16. What does the sign say?

A. Warning sign for draw bridge ahead.

B. Warning sign for hill ahead.

C. No trucks warning sign.

D. Warning sign for truck ramp.