—Now that you like computers very much, isn't that a good idea to get a ____? —Well, I'd like to, but I can't afford such an expensive computer at present.
We’ve made up our mind to finish this experiment no matter ___ difficult it was.
His doctor suggested he ___ smoke because of his illness.
---It’s a wonderful party.—It’s very nice of you to come.___.
He ___ at the enemy, without saying a word.
She didn't answer the phone.She ___ be asleep.