----- I’ ll give you a ring about eight.------Could you phone a bit later? I ______ dinner then.

—You speak very good French!                                                                 —Thanks. I ______ French in Sichuan University for four years. 

In the near future, more advances in cloning technology       by scientists.

— Was the driving pleasant when you went to Mexico last summer? — No, it ＿＿ for four days when we arrived, so the roads were very muddy.

Her car has been very dirty. She has got to _______.