______ you have finished your work, you ought to have a good rest.
—I' m sorry, but I didn’t mean__________ out your secret.—But you know, letting out one's secret means________ one' s feelings.
So seriously _____ in the accident that he was sent to hospital at once.
When we climbed up to the top of the mountain, we were all ___________.
I wondered what difficulty he had _________ the plan?
My friend, David, was not used __________ by air, so he felt unwell.