Tom _____ full marks, but he was too careless and made a spelling mistake. A. could gain B. could ha...
2022-11-29 00:41:56 108次 2013-2014学年河北省高三下学期开学调研考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Tom _____ full marks, but he was too careless and made a spelling mistake.
A. could gain B. could have gained C. must have gained D. must gain
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