--I don’t know if Mr. Li ____ to the party this evening.
-- I think he will come if he ____ free.
A. will come; is B. will come; will be C. comes; is D. comes; will be
--I don’t know if Mr. Li ____ to the party this evening.
-- I think he will come if he ____ free.
A. will come; is B. will come; will be C. comes; is D. comes; will be
A
解析:从句时态的考察 本题考察if引导的从句时态的考察，第一个if引导的是宾语从句，“李老师今晚是不是将参加我们的聚会”应用一般将来时；第二个if引导的是条件状语从句应“主将从现”。