Giúp tớ vss ----- Nội dung dịch tự động từ ảnh ----- 30. The seals B. has been A. is fed 1. The manager always welcomes new employees. → New employees EXERCISE 2. Rewrite the following sentences. 2. The students usually hold the concerts at the university. → The concerts 3. The scientists are studying the problem carefully. > The problem 4. People are destroying large areas of forest every day. → Large areas 5. Where did they hold the 1988 Olympic Games? → Where 6. The baby always smiles whenever his mother holds him. > The baby loves 7. She expects him to give her book back soon. → She wants her book 8. They prove that life doesn't exist on the moon. → Life 9. It's necessary to clean the floor to prepare for the party tomorrow. → The floor needs 10. Nobody swept this street last week. This street