Suppose 1
We often use ‘suppose’ to mean ‘imagine’ or ‘guess’
I suppose you’ll be meeting Danielle when you go to Paris?
When you weren’t there, I supposed you must have been held up.
I suppose you two know each other?
Notice that ‘suppose’ is not normally used in the continuous form. We do not usually say ‘I am supposing’.
Now I suppose we’ll have to do something else.
We’re waiting for John and I suppose he must be stuck in traffic.
At this moment I suppose it doesn’t matter.
Notice that for ‘imagine not’ or ‘guess not’ that we make ‘suppose’ negative, not the other verb.
I don’t suppose you know where Mary is?
I don’t suppose he’ll do anything.
I don’t suppose you have a Nokia phone charger here?
When responding to an idea with ‘suppose’, you can use ‘so’ to avoid repeating the idea that has already been expressed.
Is Susan coming to this meeting? ~ I suppose so.
You’ll find an exercise by clicking on this link.
https://englishgrammarsecrets.com/suppose-1/business-english-grammar