完成句子
1. The performance of the host, ________________( 旨在)to please the audience and draw
    their attention, was greeted with a cold silence, however.(intend)
2. 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)
3. Come to my office tomorrow if ________________( 你方便的话). (convenient)
4. You'd better call him up ________________( 万一他记不清)the exact time.(remember)
5. The food must be eaten up within three days ________________( 一旦打开). (open)
6. A major problem arose at the meeting ________________( 要花多少钱) to complete the whole
   project.(cost)
7. He wished to forget everything ________________( 与原来生活有联系的)and start a new life.
   (associate)
8. In no case ________________( 允许他)to get up until he was completely recovered from his
    illness.(allow)
9. 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)
10. Color blind people often find ________________( 难以区分)between blue and green.(distinguish)