Prépositions de temps et conjugaison anglaise

Read the following sentences about Sarah's day. Fill in the gaps using the correct time preposition (at, in, on) or the correct form of the verb. 1) Sarah wakes up $7:00$ AM. 2) She goes to the gym $Monday$. 3) She (to have) lunch at noon. 4) She (to finish) work $17:00$.