The ancient Egyptians are supposed _______ rockets to the moon.
The ancient Egyptians are supposed _______ rockets to the moon.
A、to send
B、to be sending
C、to have sent
D、to have been sending
【正确答案】:C
【题目解析】:在本句中,send 为短暂性动词,不能用进行时态。所以B和D两项错误。A和C的区别在于不定式的时态,句首表示时间概念的ancient表明不定式动作在句子谓语动作之前,不定式要用完成式, 因而答案是C。
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