*)Câu 1(2đ) Chia động từ:
1. While Bob (sleep)...., the phone (ring)...
2. I'd rather you (go)... to bed now.
3. The woman (sit)..... in front of me was wearing a big hat so I couldn't see anything.
4. Radium (discover).....by Marie and Pierre Curie in 1898.
5. I ( not understand)...... what you...