看问句，选答语。
__________ of milk is healthy. But too much candy is __________.
A. Plenty ; healthy B. Lot; unhealthy C. Plenty; unhealthy
Enough water is good ___________ your health.
A. of B. in C. for
When you cross the street, you should look at the _________________.
A. traffic light B. bus stop C. subway station
You should ________ right and ________ straight.
A. turn ; goes B. turns ; going C. turn; go