选词填空(可变换形式)

【小题1】______________, having a rich vocabulary is important, especially if you want to sound like a native.
【小题2】It is hard to ______________ one twin ______________ the other.
【小题3】In America, blue ______________ love, for which a bride carries or wears something blue on her wedding day.
【小题4】As is known to all, American Indians ______________ about five percent of the US population.
【小题5】With the help of his teacher, he ______________ a model student now.
【小题6】As we all know, people ______________ one another in their ability to handle stress.
【小题7】They have successfully ______________ the old way ______________the new idea in this project.
【小题8】He took it apart, and ______________ it back ______________ again.