Fill in the blanks with a suitable tense of the verbs in brackets:

We work out at the fitness center every day after work. If you __________ (8) (come) over while we __________ (9) (work) out, we will not be able to let you into the house. Just to be safe, we (leave) __________ (10) (leave) a key under the welcome mat so you will not have to wait outside.