You must be aware ______the fact that it is ____ great importance to learn English well.
We are invited to a party _________in our club next Friday.
--- Why were you late for the class, Jenny? --- Oh, my clock must be running slow, and it needs ____.
He played the computer game till late last night, ________,early this morning.
Mrs. Black had her left hand ______while cooking.
We were swimming in the lake _____ suddenly the storm started.