rse found onthe playground matches the ______ by Mary, so it must be hers

1—I wonder＿＿＿ like to be an astronaut(宇航员).—I don’t know, but I imagine it’s exciting.

Soon after the results were announced, our teacher sent us an e-mail, congratulating us our success

He lost his job three months ago; , he was seriously injured in an accident last week.

Zhong Nanshan, the famous medical scientist, has devoted most of his life ________ useful ways in treating cough diseases.