4. Nelson Mandela __(be) a South African anti-apartheid leader who ___(become) the first black president of South Africa
- Nelson Mandela is a South African anti-apartheid leader who became the firs
- Nelson Mandela was a South African anti-apartheid leader who became the fir
- Nelson Mandela was a South African anti-apartheid leader who became the fir
- Nelson Mandela did a South African anti-apartheid leader who become the fir
