问题描述：
| Letterboxes are much more _____in the UK than in the US, where most people have a mailbox instead. |
[ ] |
| A. common B. normal C. ordinary D. usual |
考点提示：形容词
最佳答案： | A |
Letterboxes are much more _____in the UK than in the US, where most people have a mailbox instead. [
Letterboxes are much more _____in the UK than in the US, where most people have a mailbox instead. [
最佳答案： 