I can't imagine _____(fail) the final exam

I can't imagine _____(fail) the final exam
I can't imagine _____(fail) the final exam

I can't imagine _____(fail) the final exam
答案：填 failing
即：I can't imagine ( failing ) the final exam.
解析：imagine doing sth 想象做某事,fail the final exam 期末考试不及格
注意：只有imagine doing 的形式,而没有imagine to do的形式
翻译：我无法想象期末考试不及格.
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