填空题

Over the past fifty years there (be) many changes in commerce. The products (deal) in and methods of production (progress) with new developments.
Packing and shipping (alter) to make the transport of goods safer and faster. (Keep) records of transactions also (change) although many of the terms are still used as they (be) when the Italians (develop) accounting systems.

【参考答案】

have been; deal; have progressed; have altered; Keeping; hav......

(↓↓↓ 点击下方‘点击查看答案’看完整答案 ↓↓↓)