Have you seen my iPhone 5 I left it here this morning.— Is it black one I think I saw it somewhere.

They didn’t do it by themselves instead of Uncle Wang for help.

the pain was bad, _____he did notcomplain

One of the tourists ______ from the tour group. That was why the tour guide lost his temper.

Why did he come back? —It is ______ he forgot to take his umbrella with him