Fill in the gaps with the correct form of the verbs in brackets.
My mother __________(to cook) supper by 6 o'clock yesterday.
The new rules _____________(to explain) to the students tomorrow.
Listen! Somebody __________(to play) the piano in the next room.
We __________(to work) without a break since 8 o'clock in the morning.
Nick is an artist. He __________(to draw) these beautiful landscapes last week