NASA is now going to put the telescope right.NASA____it.A is repairing B has already repaired

问题描述:

NASA is now going to put the telescope right.NASA____it.A is repairing B has already repaired
C will be repairing D to repair ,选择正确答案,及分别说出每个答案为什么对与错

选C will be repairing是将来进行时,正确
A is repairing是现在进行时,第一句明明说是将来是事情,故错误
B has already repaired是现在完成时,动作还未发生,怎么就完成了呢?错误
D to repair这是个非谓语动词,不能充当谓语,错误