It is vital that you _________the next question depending on what the person says while communicating.

English is a language shared by several diverse cultures, each of ______ uses it somewhat differently.

Tony, your room is really untidy. You should _________ your things to keep the room clean.—OK, Mum! I’ll do it at once.

Do you mind my smoking here—_________. Look at the sign. It says, “No Smoking.”

Look! The wind is blowing strongly.—Yes, we should keep all the windows and doors ___ .