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21.It was about 500 years ago thd first clock with a face and an hour hand was made.
A.that B.until C.before D.when
22. the population of the developing country?
A.How many are B.How much is C.What’s the number of D.What’s
21.It was about 500 years ago thd first clock with a face and an hour hand was made.
A.that B.until C.before D.when
22. the population of the developing country?
A.How many are B.How much is C.What’s the number of D.What’s