I ----- the answer to the question,I think.A,find out B,keep away C,ask

I couldn't answer the rest 为什么不是复数 I couldn't answer rests?I couldn't answer the rest 为什么不是复数 I couldn't answer rests? I'm sorry,but I don't know the answer. I don't know the answer.It's d______. i could answer sixteen of the questions,but i couldn't answer the rest.这句话可以改成i could answer sixteen of the questions,but i couldn't answer the other.么 I am sorry I don’t know the exact answer ____________(I) i don't know the answer to the questions.改成同义句i don't know the answer to the questions. 改成同义句 The man I don't know didn't answer my questions.(改为同义词） I can't (r ) the answer to the questionI can't (r ) the answer to the question()里填一个词,r开头> I used to frustrated when I wasn't sure of the correct answer.翻译 I felt embarrassingly _____ when I couldn't answer the professor's questionignorant barely memoir I don't know which is the best answer 和I don't know which the best answer is 那个从句的语序正确 i want know the answer I could answer sixteen of the question.But I couldn't answer the rest.--这句能把the rest直接改成：the other吗? Sorry,I cant tell you the answer ______ the question I don't know the answer to the question.改为同义句 I don't know_________he will find out the answer to the question. This isn't the answer to the question （用I think...合并为一句） This isn’t the answer to the question .I thank.（合并为一句）