- 试题详情及答案解析
- In the lecture, little Tom kept silent all the time unless _________ to express his opinion.
| A．he invited | B．he is invited |
| C．invited | D．being invited |
- 答案：C
- 试题分析：考查省略。句意：在整个讲座的过程中，小汤姆一直保持沉默，除了有人邀请他发言。Tom与invite是动宾关系，即Tom被他人邀请。A项不完整，B项时态不正确，D项时态不正确，unless invited的完整形式是unless he was invited to...，故选C。
考点：考查省略