A.选择正确的词语填空。
1. Tom has __________ (few; fewer) Christmas cards than I.
2. They believe that there will be __________ (less; fewer) green trees in fifty years.
3. He is ill and he can eat _________ (more; less) food, so he gets quite weak.
4. The ________ (more; much) we get together, the ________ (happy; happier) we’ll be.
5. David has _______ (less; fewer) money than Anna has.
