-I didn’t know _______.He looked so sad yesterday.-Maybe he failed his exams.
I want to know ________ you will come back at 8:00 tomorrow.
Wearing red makes__easy__us to take action.
Excuse me. I lost my way. Will you please tell me__?
_______the pair of glasses _______Mr. Wang’s.
They would rather___colours like orange or yellow than blue or white.