第一节：单项填空（共20小题，每小题0.5分，满分10分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项标号涂黑。
1. Play, often seen as activity for kids, is still important in development of teenagers.
A. the; the B. an; the C. an; 不填 D. the; 不填
2. ______, I think, the problems can be settled in no time.
A. A bit more efforts B. Keep up your spirits
C. If you double your efforts D. Making greater efforts
