Select all sentences that correctly distinguish a past background from completed events.
I was measuring the window when the tape measure was snapping suddenly.
We were baking bread when the oven failed.✓پاسخ درست
At noon, both jobs were still in progress: Leo painted the gate and Mina was cleaning the path.
The courier parked the van, carried in the parcel and collected a signature.✓پاسخ درست
توضیح
The oven sentence correctly places a brief failure inside ongoing baking, and the delivery sentence correctly narrates three completed steps. The rejected forms either turn the sudden event into a background process or make an explicitly ongoing activity simple.