I think the coffee beans are from Brazil, ________ I’m not completely sure.
句意：我想咖啡豆是巴西产的，不过我不太确定。
考查连词。A. because因为；B. since因为、由于；C. though即使、不过；D. whether是否。根据句意可知，我想咖啡豆是巴西产的，不过我不太确定。C选项符合句意，故选C。
I think the coffee beans are from Brazil, ________ I’m not completely sure.
Max got lost and was trapped in the forest for 10 hours _______ a farmer nearby found him.
Our school basketball team will win the next match _________ they practise more.
We’re not very close friends______ we’ve known each other for a long time.
Give me a chance, ________I will give you a wonderful surprise.
Lucy held her head up like a queen______ Bill was telling his tale.
Father is too tired today. Don’t call him ________ it is necessary.
I will volunteer for a two-day home stay for an exchange student from the UK. I consider it a good chance to show Chinese food________our kindness.
—I heard a young fireman lost his life in the big fire.
—What a pity! ________I don't know who he is, I know who he is for. He is our hero forever.
We were not good friends ________we saw each other, but gradually, we got along better and better.
