He escaped just in time. He ___escaped.
(a) just only (b) only (c) soon (d) only just
这是《新概念英语》第二册Lesson 67的练习，为什么答案为(d)，only just 与 just only 有什么区别？
解释：
上题含义：他刚刚好逃脱了。（他差一点儿没逃脱。）
1.only just是一个短语 意思是“刚刚、恰好；仅仅；勉强；刚才；差点儿没”。
I only just caught the train.
我差一点没赶上火车。
He only just succeeded.他差一点儿没成功。（含义是勉强成功了）
They had only just begun.他们刚刚才开始。
Considering he's only just started, he knows quite a lot about it.
鉴于他才刚刚开始，他懂得的已经不少了。
You're only just back from leave.
你才刚休假回来。
These facts have only just been brought to light.
这些事实刚刚才被披露出来。
I'm only just beginning to take it in that he's still missing.
我刚刚才开始反应过来，原来他仍然下落不明。
You're only just back from leave.
你才刚休假回来。
They only just managed to scrape the money together
他们只是勉强凑够了钱。
For centuries farmers there have only just managed to survive
几个世纪以来，那里的农民只能勉强维持生计。
The two had only just met
这两个人只不过才刚刚认识。
I haven't read much into it as yet. I've only just scanned through it.
我还没有细细研读，只是粗略地翻看了一下。
His voice was unsteady and only just audible
他的声音发颤，而且小得只刚刚能听见。
It was Colin's voice, only just audible
那是科林的声音，勉强能听得见。
Before liberation, China's highest annual output of steel was only just over 900,000 tons.
解放前全国钢年产量最高才90多万吨。
2.just only 其实就是only的意思表示“只不过，仅仅”，just在这里起到了加强语气的作用。
I just only want to ask a few more questions.Why do you shout at me?
我就是想再多问几个问题.你至于这么凶么?