Complete the sentences with the correct form of the verbs in brackets.

1 What ____ you____ (do) when you ____(hear) the news?

2 When we got to Spain, we ____(not can) speak Spanish so we ___ (have to) take lessons.

3 While I____(wait) for the bus, it____ (start) to rain.

4 When we_____ (get) our grades last week, we ____(be) very pleased.​