The challenge was so i______ that he was suffering from insomnia _英语解答

The challenge was so i______ that he was suffering from insomnia during that period.

人气：315 ℃　时间：2019-08-22 17:35:14

解答

immense
immense challenge 巨大的挑战,
这个挑战太大了,所以那段时间我常常失眠.