Are you really suggesting she this on purpose?A. doB. didC. doingD. would do

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(答案→)A. do
B. did
C. doing
D. would do
解析：考查虚拟语气。suggest作“建议”讲时，后面的宾语从句用should+动词原形，should可省略。Suggest不用于suggest sb. doing sth.，可以说suggest doing sth.。故选A。