In each Latin sentence, the English phrase in parentheses can be expressed by a gerundive of obligation (passive periphrastic). Provide that Latin phrase, using conventional word order (subject if part of the English phrase; agent if expressed; gerundive of obligation).
Example:
(We had to applaud, i.e. applause had to be offered [use offero] by us.)
Answer: plausus nobis offerendus erat or possibly plausus
nobis offerendus fuit