I didn’t know          at first, but later we became good friends.

If you don’t know ________ the new robot toy, you’d better read the instructions first.

She looks very sad. I want to help her , but I just don’t know_________ to do.

I decided to follow it to see _________.

She looks very sad. I want to help her, but I just don’t know ____ to do it.

--Could you tell me        ?
--By searching the Internet.

--As for Mr Brown, do you know          ?
--Sure.  Canada.  But he has been teaching French for two years in Shanghai.
A. where he is working       B. where he comes from      C. where is his motherland

I know _________ I promised to take you to dinner, but I won't finish working until ten o’clock.

----Tom, please tell me____________.
----In Sunshine Second School.

–Could you please tell me _______?
–Sure. Park it right here.