题目内容

It’s too bad that Helen is away. If she ____________ (be) here, she would know what to do.

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If I ___________ (can afford) it, I would buy a boat.

If it ___________ (has been, not) for your help, I really don’t know what I’d have done.

I ___________ (mean) to call on you, but was prevented from doing so.

程序填空题：从键盘输入一个整数，输出它的绝对值。public class AbsoluteValue{ public static void main(String[] args){Scanner scan=new Scanner(System.in);System.out.println("请输入一个整数");int num=scan.(1);int absolute=0;if(absolute>=0){absolute=(2);}else{absolute=(3);}System.out.println("绝对值为："+absolute);}}