помогите с определением времени
1) Listen! Someone ( to knock) at the door
2)She just (to boil) an egg
3)The telegram arrived five minutes after you (to leave) the office
4)If the water (not to be) cold, we shall swim
5)Margaret (to write) letters all yesterday morning
6)Come at 7 o'clock. The director (to sign) all documents by that time
7)I usually (to drove) to my work