Read each pattern and its example, then write your own sentence on the line.
〜にすぎない N / plain form + にすぎない
Plays something down as merely or no more than that. Slightly formal and often modest or dismissive; frequent in news and written arguments.
私はただの通行人にすぎません。 I am merely a passer-by.
〜に決まっている N / na-adj / plain form + に決まっている
Expresses the speaker's strong certainty: 'it's bound to be, obviously'. Casual and subjective, common in conversation; too blunt for formal writing.
こんな時間に電話したら迷惑に決まっている。 Calling at this hour is obviously going to bother them.
〜上は V-dict / V-ta + 上は
Means 'now that ... , naturally the following must happen'. Introduces a resolve or obligation that follows from a decided fact; formal and written.
引き受けた上は、最後まで責任を持ちます。 Now that I've taken it on, I will see it through responsibly.
〜ほどのことはない V-dict + ほどのことはない
Says a matter isn't serious enough to warrant that action: 'it's not worth doing, no need to go that far'. Reassuring tone; used in speech and writing.
かすり傷だから、病院に行くほどのことはない。 It's just a scratch, so it's not worth going to the hospital.
〜までもない V-dict + までもない
Means the action is unnecessary because the matter is obvious or trivial. Slightly formal; 言うまでもない ('needless to say') is a set phrase.
言うまでもなく、健康が一番大切だ。 Needless to say, health is the most important thing.
〜ではあるまいし N + ではあるまいし（じゃあるまいし）／ plain form + の + ではあるまいし
Means 'it's not as if ...', giving a reason to criticize or reassure. Carries a scolding or exasperated tone; spoken, and rather blunt with superiors.
子供ではあるまいし、そんなことで泣くな。 You're not a child, so don't cry over something like that.