7. The workman ________(flat)a piece of metal by hammering it.
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8. A (n)__________(add) charge is made for heavy baggage.
9. Something should be done about this as a matter of ________ (urgent).
10. This restaurant is an excellent place for ________(entertain) business guests.
中国新民主主义社会的时间是:________
A. 1919--1949年
B. 1949--1954年
C. 1949--1956年
D. 1949--1978年