23. Speed of cars is measured ________kilometres per hour.
—Wheredoesyoursisterwork,Jack? —Sheworksina___________.
—Look!Thisis__________. —Verybeautiful.Whendidshetakeit?
—Whatdoyouthinkthe___________shoulddofirst? —Theyshouldlearntotake___________aswellassharerightsinlife.
In order to improve English, ________________.
Children will work actively if_________________.