The meaning of the word isvarious ______ different situation.

Isn’t that your new English teacher over there– No, it ______ be her. She doesn’t have long hair.

With the quality-oriented education being carried out, teachers won’t _______too much importance to students’ grades.

下列各句中，没有语病的一句是

_______no doubt that a green campus plays an important role in the growth of students, both physically and mentally