You were smart and adorable and all this time I assumed you were dumb and adorable.

你很聪明，而且很可爱,这么久了我竟然一直以为你可爱但只是不会说话呢“

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I thought university was going to be a lot easier than it is.

我一直以为大学的学习会比较容易。

I think 实战 - SpeakingMax英语口语达人

I used to think penguins could fly.

我曾经一直以为企鹅会飞。

I used to实战 - SpeakingMax英语口语达人