My English has greatly improved , ______ I practice using it every day.
I’d like to ______ you _______ your success on the experiment.
It is generally believed that teaching is ______ it is a science.
He raised his voice to make himself _______ clearly by the audience.
There were too many people in the room and he could hardly find a chair ______.
Rather than ______ on a crowded bus, he always prefers ______ a bicycle.