せねば
Meanings
Expression
1. ought to do; have to do; must do; feel obliged to
Since this is technically a security mission, I must report.
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Examples (5 in total)
I must act inconspicuously.
We must also consider fighting while moving.
Since this is technically a security mission, I must report.
We must protect the non-combat personnel at once.
I had to drive myself to the hospital.