Weare watching TV ______ we caught sight of a friend of ours .

Students can ________ knowledge from teachers and books.

Jenny hopes that Mr Smith will suggest a good way to have her written Englishin_____ a short period[ ]

_______ the ability to speak, so heused sign language to communicate with others.

17．——Honey, please don’t play the computer games.——Pardon ——I ______ play the computer games.