Question

--Our English teacher tells us that ______ grammar is a good way to learn English.

--And our teacher says _____ also helpful to sing English songs.

1. A.
   study, that was
2. B.
   is studying, it’s
3. C.
   studying, it’s
4. D.
   studied, that was

Answer 1

C
本题第一空考查的是动词的非谓语形式，作为主语时相当于三单形式，say+that从句，故选答案为C