（题文）The tiger, once a ____ animal to humans, is now ____ of disappearing on the earth.

Christmas is a Christian holy day usually celebrated on December 25th ____ the birth of Jesus Christ

Here are some potatoes, please ________.

Occasions are quite rare ____ I have the time to spend a day with my kids.

eceived an invitation to dinner, and with his work ________，he gladly accepted it