A surge in new home sales and a drop in weekly unemployment claims suggest that the economy might not be as weak as some analysts previously thought.
C. claims suggest that the economy might not be as weak as have been previously thought by some analysts.
这道题目A是正确的,但是LZ不是很理解OG对C的解释:the sentence offers no plural subject to fit the passive verb have been thought. 但是LZ怎么觉得这里have been thought的主语就是analysts?
请解答!