People complain that decisions to approve or deny a permit are often ______ rather than based on fixed criteria.
--- Will you read me a story , Mummy? --- Ok. You ____ have one if you go to bed as soon as possible
_______ in the war, many children have become orphans(孤儿).
Hard _____ he tried, he failed to catch up with the first runner.
--- Are you going to Tom’s birthday party? --- _____. I might have to work.
I _____ through that bitter period without your generous help. A. didn’t go B, hadn’t gone C. wouldn’t go D. couldn’t have gone