China ________ rapid economic development and political stability over the past three decades, but with them ________ some social problems.
A．has seen; has comeB．had seen; are coming
C．saw; will comeD．has seen; have come
D
考查時態(tài)。over the past three decades表明句子用現(xiàn)在完成時，some social problems作主語，謂語動詞用復(fù)數(shù)，所以選D。
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