The basic unit in the study of morphology is ______.
B
正如音位是音系学研究中的基本单位一样,词素是形态学研究中的基本单位。
Iwaswritingareportlastnight;________Iwouldnothavestayeduplate.
Youngerchildrenarecurious________howthingswork,andmanyofthemwanttotakeaparteverythingwithintheirreach.
Alinguistictheoryisconstructedaboutwhat______isandhowitworks.
Thereisadeadlock(僵局)inthediscussionwhenneithersidegives________totheother.