______ we have confidence and determination, we can win the match.
A．OnceB．SinceC．UnlessD．As long as
D

試題分析：句意：只要我們有信心和決心，我們就能贏得這場(chǎng)比賽。Once一旦 Since從……以來 Unless除非 As long as只要，選D。
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