Select all sentences that use narrative tenses correctly.
By the time the hiking group reached the hut, the caretaker had lit the stove.✓پاسخ درست
While Eva had checked the tyres, her brother had loaded the roof box at the same time.
The mechanic tightened the final bolt, lowered the car and signed the form.✓پاسخ درست
Jon had opened the shop, had counted the till and had switched on the lights in that order.
توضیح
The hut sentence correctly places lighting the stove before the group's arrival, and the mechanic sentence uses the past simple for three completed steps in order. The tyre sentence needs continuous background forms, while the shop sentence overloads a plain sequence with repeated past-perfect forms.