Complete the sentences with the verbs in brackets. Use the past perfect simple or past perfect continuous. Then match each sentence with a rule in the Learn this! box. (Hoàn thành câu với động từ trong ngoặc. Dùng quá khứ hoàn thành hoặc quá khứ hoàn thành tiếp diễn. Sau đó nối mỗi câu với một quy tắc trong phần Learn this!)

1 After he ______ (finish) his application form, he sent it to the company.

2 They ______ (plan) the project for months when it was suddenly cancelled.

3 The applicants ______ (not wait) long when the interviewers arrived.

4 All the candidates ______ (do) the test since 8 a.m.

5 She ______ (know) what job she wanted to do since she was a child.