Cloning an animal is a complex ________ that can go fatally wrong at any stage.
---Will you come to my office when you _______ your work.? ---Sure
_______ in the storybook that he had bought not long before, the boy didn’t notice his mother go into his room.
Tina has been working so hard at English that she _______the find English exam.
Mary’s parents objected to _______ John, who was poor and lazy.
Mary felt herself _______to take action to defend herself.