Question

By now, more than 100 photos ________ back to the earth by Chang’e-3.

A．had been sent

B．has been sent

C．have been sent

D．will be sent

Answer 1

C

试题分析：句意：到现在，超过 100 的照片由嫦娥 3 传回地球。 By now 到现在为止，用于现在完成时中，该句主语是动作的承受者，应用被动语态，故选C。
考点: 考查动词时态和语态的用法。