We should well balance our work and relaxation, and ____________, as everybody would agree , can we have a good state of mind.
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.