Change the normal sentence into one with inversion. You may have to change some of the words.
ANSWERS + EXPLANATION
We use No sooner ... than, Hardly/Scarcely/Barely ... when/before when we want to say that one event happened a very short time after another. These expressions are usually used with past perfect.
Negative inversion with adverbs of time meaning 'immediately after' or 'only just'. HARDLY/BARELY + HAD + SUBJECT + PAST PARTICIPLE ... WHEN/BEFORE ... Hardly/Scarcely/Barely had we arrived home when my phone rang. NO SOONER + HAD + SUBJECT + PAST PARTICIPLE ... THAN ... No sooner had they got married than they started to argue.
1) had she recovered from pneumonia than 2) had I sat down to eat dinner when/before 3) No sooner had David arrived at the airport 4) had we started playing football when/before 5) Hardly/Barely/Scarcely had Susan finished her tea