When you’re learning to play the piano, _______ a good teacher makes a big difference.
—The light in the office is still on. —Oh,I forgot __________.
She pretended __________ me when I passed by.
Sometimes customers can't help __________ the things they don't re-ally need.
I __________ walking in the garden __________ watching TV in the room.
__________ in a well-known university is what everybody wishes for.