I phoned you at 7 yesterday evening but nobodyanswered.— Oh, I _______my dog in the park then.

You must ______ a wide vocabulary if you want to learn a language well.

It was late. He opened the door ________ so that he wouldn’t wake his mother up.

Do you allow your son to go to any Internet café on holidays?—not !

It was not until dark ______ he found ______ hethought was the correct way to solve the problem.