The computer in 1946 in America.

Hundreds of Swedish workers are trialing a six—hour working day in the hopes that it will_____ sick leave and save the country money.

Mao Dun is Cindy’s favourite writer. He died in 1981, _____ his works are still popular today.

Make a tentative guess _____ Peking Man_____ have done and used thousands of years ago.

______ of personal preference