下面是一个栈类的模板，其中push函数将元素i压入栈顶，pop函数弹出栈顶元素。栈初始为空，top值为0，栈顶元素在stack[top-1]中，在下面横线处填上适当语句，完成栈类模板的定义。template ＜class T＞class Tstack{enum{ size= 1000 };T stack[size];int top;public:Tstack():top(0){ }void push(const T &i){ if(top＜size)stack[top++]=i;}T pop() { if(top==0)exit(1); //栈空时终止运行 return 【15】 ;}};

根据句意及首字母提示完成下列句子。

1. Don't p_____ here. It's dangerous.

2. Whether we'll come or not d ______ on the weather.

3. I w _____ if she'll come to join us.

4. I am sorry to b _____ you, but can you tell me the way to the library?

5. I've been c _____ stamps for many years.