you don’t lose heart I’m sure you can pass the coming examination.A. UnlessB. If notC. A

问题补充：

you don’t lose heart, I’m sure you can pass the coming examination.

A. Unless

B. If not

C. As long as

D. Although

答案：

A. Unless

B. If not

(答案→)C. As long as

D. Although

解析：连词辨析。A除非，如果…不…；B如果不；C只要；D尽管；句意：只要你不失去信心，我敢确定你一定能够通过即将来临的考试的。故C正确。