3 . “噢，当你突然回来时，他准是跑进了你的卧室并躲起来。你们看卧室的窗台，开着的。”
“Well, when you came back so suddenly, he __________ __________ __________(run) into your bedroom to hide. Look at the bedroom window, it’s open.”

4 . 她昨天肯定已经完成作业了。
She must________________yesterday.

5 . 因为路是湿的，所以昨晚肯定下雨了。
Since the road is wet, it ______________________ last night.

6 . ________________（那个求职者肯定早就意识到了竞争的激励性aware）, so he didn't feel panic. (根据汉语提示完成句子)

7 . The children________ as they opened the envelope with a North Pole stamp.
当孩子们打开贴有北极邮票的信封时，他们一定很兴奋。

8 . Nobody noticed when he entered the classroom; he ___________________it from the back door.(slide)
没人注意到他什么时候进的教室；他一定是从后门溜进来的。

9 . 杰克昨天一定到达这儿了,对吗?
Jack_______________________

10 . 从你的话看，她一定告诉了你所有的事情。(must＋have done)
From what you said, she _______ all about it.