完成句子

The performance of the host, ________（旨在)to please the audience and draw

   their attention, was greeted with a cold silence, however.（intend)

I'm afraid I won't be able to attend the meeting at 3 ∶00 p. m. next Monday. I _______（已

  经坐飞机到) New York long before then.（fly)

Come to my office tomorrow if ________（你方便的话). （convenient)You'd better call him up ________（万一他记不清)the exact time.（remember)The food must be eaten up within three days ________（一旦打开). （open)A major problem arose at the meeting ________（要花多少钱) to complete the whole

  project.（cost)

He wished to forget everything ________（与原来生活有联系的)and start a new life.

  （associate)

In no case ________（允许他)to get up until he was completely recovered from his

   illness.（allow)

She is busy with applying for a patent recently, and has ________（没时间整理房间)

   which is in a mess now.（tidy)

Color blind people often find ________（难以区分)between blue and green.（distinguish)

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