His uncle went abroad in 2010, and _______since.
A．has not been heard of B．had not been heard of
C．had not heard ofD．has not heard of
A
考查時態(tài)和語態(tài)。Since后跟過去時間，句子用現(xiàn)在完成時態(tài)。而且His uncle和hear之間是動賓關(guān)系，所以用被動語態(tài)。選A。
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