为什么是she++is++the++slimmer++of++the++two

为什么是she++is++the++slimmer++of++the++two She has a skirt.The skirt is nice.句子中skirt前面为什么是The 句子She is taking care of the children.She is taking care of the children.不是说be +ing为表语吗?为什么是谓语? what is happening? she asked.为什么是is happening. she is far away_____with the result of the exam.AsatisfyB satisfiedCbeing satisfiedDsaitisfying为什么是c高考的题 the film is so moving that she usually watches it with her face__ in tears 为什么是bathed which is the car she drives It's car fifty-four为什么是car fifty-four 是什么用法 she is good at swimming.为什么是swimming? She is fond of collecting stamps.fond为什么是谓语 she is often popular为什么是often而不是much? I don't know how she is now.为什么是how she is 而不是how is she呢? She looks younger than she is. 为什么是is不是does? The movie is sl interesting that all children are ___ A laughing B happy in the school she studies hard为什么是studies The reason why she failed the test was that she wasn't prepared.为什么是prepared. 在The bird is her friend since she brought it home中,明明有since但为什么是用is而不是had been? 为什么是what is she doing for vacation.而不是what does she do for vacation 为什么是she is dead而不是she was deat字打错了 是dead