Thanksgiving Day offers the Americans an opportunity to join in a spirit of fellowship and express ________ for the year's bonuses and blessings(奖金和祝福).
We decided not to climb the mountains because it was raining________.
The pianos in the other shop will be ________, but ________.
John plays football ________, if not better than, David.
Which is ________ country, Canada or Australia? (NMET1992)
How beautifully she sings! I have never heard________.