Pieces of bamboo or wood ________ books between 2nd and 5th century AD.
A. used to formed B. used to form
C. were used to form D. used to beforming
相关试题
He is such ____ social failure that many colleagues don’t like him.
| A．the | B．an | C．a | D．不填 |
—Are you here on business?
—No, _____. This is my holiday.
| A．for pleasure |
B．with pleasure | C．a pleasure | D．It’s my pleasure |
_______ his being late again , he lost his job and had to stay at home.
| A．Owe to | B．As result of | C．In case of | D．Because of |
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