Complete the sentences with the correct form of used to or would. In which sentences is either possible? (Hoàn thành các câu với dạng đúng của used to hoặc would. Những câu nào có thể dùng cả used to và would?)

1 He ___________ (work) as a journalist for a science magazine.

2 Years ago, small children ___________ (clean) chimneys to earn money

3 That athlete ___________(have) difficulties getting picked for the team.

4 ___________ (she / wear) uniform in her previous job.