Have you used the new computer ______ —Yes， I have. I have ______ used it.

Can we go camping tomorrow，as planned—I’m afraid not The dark clouds aheavy rain

_ several times, he still turned a deaf ear tothe typhoon forecast.

This week, the _______ seems to change every day: one day is hot; the next day is cold.

I have __ ___ decided when to leave, but my sister hasn’t decided__ ___.