Question

---What did the teacher say just now?

---He said that the earth _______ round the sun．

1. A.
   go
2. B.
   goes
3. C.
   going
4. D.
   went

Answer 1

B
宾语从句要求主、从句的时态要保持一致。但如果从句所表达的是客观事实时，则要用一般现在时。