Question

--- Your classroom is very clean.
--- Sure. It ________ after school every day.

A．is cleaned

B．cleans

C．cleaned

D．is cleaning

Answer 1

A

試題分析：句意：你們的教室很干凈。——當然了，我們每天放學后打掃它。結(jié)合語境可知下文主語it是動作對象，故用被動語態(tài)。選A。
點評：此類題型主要是確定句子主語與謂語動詞的關系。如果是主動關系則用主動語態(tài)，反之如果是動賓關系，則用被動語態(tài)。