当不知道笼子里的是什么动物时,你可以问:________A.What's this? B.What time is it?
________ is the capital city of Guangdong Province.
Your mother's mother is your brother's ________ .
A: In which box? B:________ .
A : Can I ________ ? B : Sure , here you are.
Which is for you? This one ________ that one ?