Match the halves of the sentences. There is one extra ending (you don't need to use it).

Write one number in each gap.

Before William was promoted, [ ]

They had only been waiting for her for twenty minutes [ ]

Her room was so clean [ ]

1. when she arrived.

2. he had been working at this company for a year.

3. as she called me.

4. because she had been tidying up all morning.