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—Was it under the tree ______ you went away talking to a friend?
—Sure. But when I got back there, the bike was gone.

He never speaks to others until ______.

It was not yet dawn ______ the boy got to the school.

Mary felt sad over the loss of photos she had shot in Australia, ______ that was a memory she especially treasured.

—Bob, look what you have done! You ruined the experiment.
—It’s not my fault. I just carried out the instructions _____.

While ____the dog, you should take care not to ____.Otherwise, it may be dangerous to strangers.

He left the key ______ he had been an hour before.

Though ______ to see us, the professor gave us a warm welcome.

_______ why she wasted money on a lottery ticket, the poor mother answered, “ A dollar is not too much to pay for 24 hours of hope”.

      hot the weather will be tomorrow, we must get the whole project        .