1 . I ran 42 kilometres, crossing the finishing line ________ (joy) and received my medal proudly. (所给词的适当形式填空)

2 . We reviewed the past events and watched some videos about the heroic deeds of our schoolmates in the battle ________ COVID-19. (用适当的词填空)

3 . She asked where he’d been, but he didn’t respond, and in _________ (respond) to it, she shouted to him, “Where had you been?” (所给词的适当形式填空)

4 . Urban students, meanwhile, _________ (regular) had as many as 48 weeks of regular study a year, with one break per quarter. (所给词的适当形式填空)

5 . To ________(保证，确保) everyone’s safety, the authority conducted rounds of nucleic acid testing. （根据汉语提示单词拼写）

6 . I am _______(好奇的) about the astronauts’ six-month stay on Shenzhou XIII Spaceship. （根据汉语提示单词拼写）