We must__________ a topic before we start to write.[ ]

What you smell as you sleep may influenceyour dreams Smell the flowers before you go to sleep ________ you may just endup with rosier dreams

When Chinese people tis San Francisco.

Word came ______ another violent earthquake struck Sichuan once again, ______ a great loss

Tire patient looks much better．_____ is it that has made him _____ he is today?—Perhaps the special medicine and his family’s patient care．