G. Complete the sentences with the correct form of the verbs in parentheses. Use the Simple Past, the Past Perfect or the Past Perfect Continuous.
1. I …………. (know) about the accident because Norman………….(tell) me about it earlier in the afternoon.
2. Nobody …………….(beat) the Russian wrestler before the last Olympic Games.
3. My uncle ……………(collect) stamps for many years before I …………..(start).
4. Tina …………….(not be able ) to answer the questions since she……………(not read) the book.
5. Robert……………(feel) better after the doctor………………(give) him some medicine.
6.Max ……………(be) frightened because he …………… (never do) a bungee jump before.