单选题 9. Since she is so worried, we ______ her the truth.

A、 might as well tell
B、 had better told
C、 would rather tell
D、 should have told

【正确答案】 A

【答案解析】[考点] 情态动词
might as well：不妨，最好还是，后面加动词原形，符合题意。had better：最好，后面要加动词原形，选项B形式错误；would rather：宁愿；should have done：过去本应该做某事，这两项均与题意不符。故选A。
既然她如此担心，我们不妨告诉她真相。