Recently our government policymakers are very ______ about the rapidly rising food cost.

Oneachsideofthestreet ____alotoftrees.

Many people are not________the danger of theirchildren’s bad habits, which lead to failing to maketheir dreams come true.

You may find the key to the math problem on page 107．—Ah, it’s so simpleI wonder why I _____ of that

Yougoand ask Tom.Heknow the answer.