- 试题详情及答案解析
- Mr. Li was out of touch last week. The police ________ for him since.
| A．have been searching | B．were searching |
| C．had searched | D．has searched |
- 答案：A
- 试题分析：考查时态。根据句中的时间状语since =" since" last week可知，用现在完成进行时，表示此动作从过去一直就开始，并持续到现在。句意：李先生上个周失去了联系，自从那时起警察就一直在寻找他。故A正确。
考点：考查时态