The old black woman used to tell stories under the tall tree, with her grandchildren ____ around and ______ attentively.

We have learned over 1500 words ____ this term.

Someone is knocking at the door. Is it Ann— It _____ be her. She is giving a performance at the theatre now.

himself to his lab research, thefamous scientist missed ________from the liver cancer.

Our geography teacher told us that Britain is _____ European country while Korea is _____ Asian country.