He was so tired that he fell asleep ___he went to bed.[ ]

Yesterday I downloaded a new program ______the Internet. Now I can watch TV and movies ______ my computer.[ ]

Now my father _____ his bike to work every day instead of driving.

____ my pen?—Yes, I ___ it on your desk five minutes ago.

Though I ______ the telephone number many times, the foreigner couldn’t write it down.