单选题：Sarah made ___ to the airport just in time to catch her plan..

He didn't make ____ clear when and where the meeting would be held. [ ]A. thisB. that C. it D. these

_______ is a fact that English is being accepted as an international language. [ ]A. ThisB.ThereC.ThatD.It

The chairman thought ____ necessary to invite Professor Smith to speak at the meeting. [ ]A. that B. it C. this D. him

______ Michael Jordan has been back on the sports field.[ ]A. It is believed what B. It's reported that C. People thought that D. They are reported that

— How can you keep so healthy these years?— Well, I have made____ a rule to take part in physical labor every Sunday. [ ]A. this B. that C. itD.me