271. Wait for me for a few more minutes. I am _____ to a letter from one of my former classmates at college and will finish writing very soon.
-----Hello ,Mr .Smith .This is Larry Jackson .I am afraid I won’t be able to arrive on time for the meeting in the office . ------_______.We ‘ll wait for you.
.The suggestion has been made _____the basketball game _____put off .
. They did everything they could to prevent the pollution ______ the river.
. Could I have a word with you, mum? — Oh, dear, if you ______.
. All but one _______ take part in the conference ______ tomorrow.