第70句：

There must be a problem with the computing system.It should be straightened out in a couple of hours.

六級詞匯講解:
must意為“肯定，一定”，表示極為肯定的推測。straighten sth. out意為“解決(問題)”。a couple off'意為“一些，幾個”。

六級考點歸納：
與straighten有關的短語具體用法如下:
1. straighten sb. out意為“幫某人解決問題;使某人好轉、規矩起來”。如:
They are trying to help those kids straighten themselves out.
他們試圖幫那些孩子改邪歸正。

2. straighten sth. out意為“清理，整頓;解決”。如:
There are a few things that need straightening out.
還有幾件事情需要搞清楚。

3. straighten sth. up意為“收拾整齊”。如:
You can't go out till you straighten up your room.
你得先把房間整理好才能出去。

4. straighten up意為“改邪歸正，重新做人”。如:
You'd better straighten up, boy.
小伙子，你最好改邪歸正。