Could you guys help check if all sentences are well correctly constructed. (English native pls) Im going to use this to test my participants for my master thesis on the other day. Please help, i want to make sure that it is correct and wont make my participant confused. Thank you so so much. Fill in the gaps using the verb in brackets in the past simple form and past progressive form. 1. While Bill _____________ (run), he___________ (hurt) his foot 2. My sister____________ (talk) on the phone when I ___________ (arrive). 3. When the scientists___________ (discover) the new drug, they _____________(work) in their laboratory. 4.When she _____________ (carry) a suitcase, she___________(drop) it on her foot. 5.While Suthee______________(wait) for the train, he_____________(give) money to a beggar. 6. Somsak________________ (break) his leg while he______________(play) football. 7. While Nid____________ (walk), she_______(find) some money. 8. Suda________________ (smile) to a girl next to her while she_________________(sit) with parents at the airport