The boy has _____ a fine knowledge of geography by careful study.

Can you tell us ___________your parents do at home.—I often do the dishes and wash the clothes.

Do you play sports—No, I watch them ____TV.

No one can imagine the difficulty hehad _______ his son to get rid of the habit of playing computer games

－Which do you like better， juice or coffee－__________is OK. Thank you!