these are the reasons which,____ to the tiredness ,cause Andrea to sleep so soundly.A.add B.to add C.adding D.added选哪个?为什么?cause 是谓语?原题应改为：These were the reasons which,___ to the tiredness,cause Audrea to sleep so soundl
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these are the reasons which,____ to the tiredness ,cause Andrea to sleep so soundly.A.add B.to add C.adding D.added选哪个?为什么?cause 是谓语?原题应改为：These were the reasons which,___ to the tiredness,cause Audrea to sleep so soundl
these are the reasons which,____ to the tiredness ,cause Andrea to sleep so soundly.
A.add B.to add C.adding D.added
选哪个?为什么?cause 是谓语?
原题应改为：These were the reasons which,___ to the tiredness,cause Audrea to sleep so soundly.
刚才看错了。cause 是定语从句的谓语是一定的，但时态值得磋商，似改为过去时为好。但added 为过去分词，相当于which was added to the tiredness,
these are the reasons which,____ to the tiredness ,cause Andrea to sleep so soundly.A.add B.to add C.adding D.added选哪个?为什么?cause 是谓语?原题应改为：These were the reasons which,___ to the tiredness,cause Audrea to sleep so soundl
which cause Andrea to sleep so soundly 是reasons的定语 cause 在从句中做谓语.
选D 这句话的意思是 这些,加上劳累,是Andrea睡得这么沉的原因
add to 是加上的意思 这里表被动 用现在分词
personal opinion:
选C 句子的主干是there are句型，which cause andrea to sleep so soundly 是一个非限制性定于从句。整个句子的谓语是are
选D,句中应该说的是reasons added to the tiredness cause Andrea to sleep so soundly，中间那个added to the tiredness是reasons的定语，而整个which...so soundly也是reasons的定语从句。前面那个定语因为是过去分词定语，所以用added