we were happy that time and I will never forget it(保持原义)we_____ _____be happy that time and I will never forget it

问题描述:

we were happy that time and I will never forget it(保持原义)
we_____ _____be happy that time and I will never forget it

We were so happy that time that I will never forget it.

used to应该是过去那段时间开心的意思

used to 过去.