-Let's take a coffee break.
-________ We've been working for hours.
Why bother?
What for?
You got me there.
You said it.
The book has helped me greatly in my daily communication, especially at work ________ a good impression is a must.
The man _______ came to see you is my brother.
English is a language shared by several diverse cultures, _________ uses it differently.
I don’t become a serious climber until the fifth grade, ______ I went up to rescue a kite that was stuck in the branches of a tree.
A company ______profits from home markets are declining may seek opportunities abroad.