第一节：单项填空（共25小题；每小题1分，满分25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。

1. If you are planning to spend your money having fun this week, better__________ it-you've got some big bills coming.

    A. forget              B. forgot          C. forgetting          D. to forget

2. Don't leave the water       while you brush your teeth .

    A. run             B. running            C. being run        D. to run

3.The book will show you___________can be used in other contexts.

    A.that you have observed              B.that how you have observed

    C. how that you have observed         D. how what you have observed