Bicycling is good exercise ;___________, it does not pollute the air.
______ is no doubt that the Rockets will defeat the Washington Wizards in the next game.
She pretended _____ me when I passed by.
It is ten years since we _______ each other last time.
They are living with their parents at present because their own house ________.
In general, I would agree with him, though not _____.