Past perfect continuous interrogative 10 - tutto inglese - Imparare l'inglese gratis on line

the historian (research) the topic long before publishing the book?
they (experience) problems before the system update?
she (consult) with the expert before making the decision?
he (take) the medication before his condition improved?
we (follow) the correct procedures before the audit?
the committee (review) the applications before the deadline?
she (train) consistently before the championship?
I (manage) the team effectively before the turnover?
he (study) the market trends before investing?
we (prepare) for the event long before the date was set?