1 . He refused to comment on his last trip to Japan since it was a h______________(糟糕的) experience for him. (根据中英文提示填空)

2 . A simple rule in raising children is to keep p______________(有毒的) substances out of their reach. (根据中英文提示填空)

3 . One must learn to be s______________(满意的) with what he already has and expect what he hasn’t. (根据中英文提示填空)

4 . Cutting down on p______________ (塑料的) products is an effective way to save the environment. (根据中英文提示填空)

5 . Cheap goods are a______________(可获得的), but not in sufficient quantities to meet demand. (根据中英文提示填空)

6 . As everyone knows, some insects are b______________ (有益的) to the crops. (根据中英文提示填空)

7 . As one of the most ___________ (influence) political figures in history, Lincoln is now printed on US dollar bills. (所给词的适当形式填空)

9 . As the students grew older, they became more i______ (独立的) of their parents and took on more responsibilities. (根据中英文提示填空)

10 . Unfortunately, the athlete’s performance was s______ (严重地) affected by injuries. (根据中英文提示填空)