—Is David a man with good manners ?—I don’t think so . As a matter of fact , he is but polite .
It was dark when Mary went out. I wonder how she ______ through the black lane by herself.
Not until I ________ to work ____ how much time I had wasted.
–--I play high-temperature Yoga in the gym every Sunday. ---- Good habit, but the air in the gym is bad ________.
___________ his poem, he didn’t dare to submit it to the professor.
Completely ____________ computer games, he now doesn’t take classes.