3. Complete the sentences with the words and phrase from the box.

(Hoàn thành các câu với các từ và cụm từ từ hộp)

invented          created

experiments          discovered

fingerprint scanner

1. Marie Curie and Pierre Curie ______________ radium and polonium.

2. Thomas Edison ___________ the light bulb in 1880.

3. Sarah Gilbert is the creator of a vaccine. She ___________ it in 2020.

4. Scientists have carried out many ___________ to find a cure for cancer.

5. Scan your finger on this _____________ to check attendance, please.