1. 根据旬意，从方框中选择恰当的单词并用其适当形式填空。

wait, program, serious, win, happen

1. （1） We will know the of the competition this afternoon.
3. （2） Ifor them at my home all day but they didn't appear.
5. （3） This isn't a joke. You must take it
7. （4） The are so interesting that Dale can't stop watching them.
9. （5） Whatto Alex yesterday? He seemed unhappy.