1 . I met Mr. Zhang ________ in the bookstore.

A．by mistake

B．by the way

C．by accident

D．by myself

2 . Bad luck! I locked the office ________. I had to call others to send the key to me.

A．by mistake

B．in total

C．on purpose

D．in silence

3 . 杰克错拿了琳达的词典。
Jack took Linda’s dictionary ________ ________.

4 . After years of hard work, Tom achieved his goal _________.

A．by mistake

B．at last

C．after all

D．on time

5 . 我误拿了他的伞。
I took away his umbrella ________ ________.

6 . —Why do you look so excited, Jessica?
—Because I met my primary school classmate ________ in the street yesterday.

A．by mistake

B．in danger

C．by accident

D．in need

7 . 刚才他错拿了我的笔记本。
Just now she took my notebook ________ ________.

8 . I’m sorry I took your backpack ________.

A．in mistake

B．with mistake

C．by mistake

D．by mistakes

9 . There are two million books in the library ________.

A．in total

B．in public

C．in person

D．by mistake

10 . 对不起，我刚错拿了你的书。
Sorry, I took your book ________ just now.