---Helen,doyouknowifMartin

問題詳情：

---Helen, do you know if Martin __________ to my party next week?

---I think he will come if he __________ free.

 A. will come; will be                      B. will come; is

C. comes; is                                    D. comes; will be

【回答】

B

知識點：動詞時態

題型：選擇題