Put questions to the words in bold type. let your fellow-students answer them: 1.the letter has been posted already.2.the line has been engaged since 10 o’clock.3.the doctor is out. the message has been left for him.4.we have received the money order at the general posy-office this morning.5.my telephone is out of order. frequent buzzing has been heard since morning. 1)the letter 2)the line 3)for him 4)have, the money order 5)frequent buzzing

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