一. 单项选择（共15小题，每小题1分，计15分）
从A、B、C、D四个选项中选出一个可以填入句中空白处的最佳答案。
1. ---You look worried. What’s your ______ ?
---I have trouble learning English.
A. name B. question C. problem D. job
2. Sam looks like his Dad. They are ______ tall.
A. either B. any C. all D. both
