22. At the end of 2018, a powerful typhoon ______________________________(strike) the north of my country. 23. By the end of 2018, 10 typhoons ___________________________________(strike) the north of my country. 25. By the time all the storm debris ________________________(clear), we ______________________________ (work) for nearly a day. 26. By the time the victims ________________________________(receive) food supplies from the military, they ________________________________(eat) nothing for three days. 27. After the forest fire _________________________________(put out), we ____________________________ (start) to search for the missing. 28. After the flood __________________________________(retreat), we _______________________________ (sweep) the mud out of the house. 29. Before the typhoon ________________________________(hit) the northern coastal area, all residents ________________________________(evacuate) to safe places. 30. Before this community house ____________________________(build), we ____________________________ (hide) in the cave when there was a storm. giúp mình nhanh với ạ