The world would have been so much better if we all knew to say and do the right thing at the right ...

查看本题答案

包含此试题的试卷

Were there Had there been If there are If there have been

will have been had been should have been would have been

would have been had been will have been will be

would be wouldn’t be would have been wouldn’t have been

would not have been sold won’t sell would not sell have not been sold

did; go; were invented would; go; had been invented had; gone; would be invented would have; gone; had been invented

had been were was would be

would have been, have left would have been, had left had been, left was, left

will be could have been would be would have been

would expect would have expected have expected had expected

were had been have been would be

would have been unthinkable would not be unthinkable would be unthinkable would not have been unthinkable

were had been would be would have been

will be would have been will have been would be

worked; would not be had worked; would not have been worked; would not have been had worked; would not be

may have been would have been must have been should have been

had been were was would be

Were there Had there been .If there are If there have been