我不是在抱怨，我只是说我累了。

I wasn't complaining, I ___merely said that I was tired.

我没有说你必须去——我只是建议你可能想去。

I didn't say that you had to go - I ___merely suggested that you might like to go.

当然，这仅仅是一个建议，如果你有其他想法，请尽管告诉我。

Of course this is ___merely a suggestion, and if you have anything else in mind please don't hesitate to let me know.