9. It worried her a bit ______________ her hair was turning gray. A. whether B. that C. what D. when 10.What I say and think ___ none of your business. A. is B. are C. has D have
9.这是主语从句,it是形式主语,而后面的从句her hair was turning gray 是真正的主语,而这个从句是完整的,所以只需要连接词that即可。 10.What I say and think 是主语从句,主语是一句话的话,系动词用单数,none of your business意思是和你无关,整句话的意思:我所说的和想得都和你无关。