He________(打电话)to his pen pal when Igot to his house yesterday快点吧Orz、、、、Orz。
问题描述：
He________(打电话)to his pen pal when Igot to his house yesterday
快点吧Orz、、、、Orz。
答
为你解答。
He（was making a phone call）(打电话)to his pen pal when I got to his house yesterday.
昨天我到他办公室时，他正在给笔友打电话。
解释：make a phone call to sb，给某人打电话。
答
He【was calling】to his pen pal when Igot to his house yesterday.
用过去进行时。
昨天当我到家的时候，他正在给他的笔友打电话。
答
这道题的正确答案是：
was calling
时间状语从句是 j昨天当我到他房子时
所以用过去进行时
昨天我到他房子时,他正给他笔友打电话