Among the four sentences below, sentence ______ is the most polite form.

单项选择题Among the four sentences below, it is in sentence ______ that the speaker merely asks for confirmation of his assumption.

单项选择题Among the sentences below, it is sentence ______ that denotes command .

单项选择题Which of the italicized parts functions as a subject

单项选择题Which of the italicized parts indicates CONDITION AND RESULT

单项选择题The following determiners (限定词) can be used with plural count nouns and non-count nouns EXCEPT ______.

单项选择题Which of the following sentences contains subjunctive mood

单项选择题Which of the following is a derived word (派生词)

单项选择题He lived a saint, and died a martyr. The italicized part functions as a (n) ______.

单项选择题He was awakened by ______ knocking on the window.

单项选择题It s said that Dr. Anderson was breaking fresh ______ in cancer research.