单项选择题
Where is my pen I （）it.
A. might lose B. would have lost C. should have lost D. must have lost
单项选择题 The doctor suggests that a person （） exercises every day if he wishes to be healthy.
单项选择题 The police found that George had still another （）of income
单项选择题 It was from Stephen （） she first heard of the man referred to as a specialist
