ex.1
a)She was waiting for the manager. She had been waiting for him since she came to the office.
b)It happened some years ago.
c)Before he went there last Monday he had discussed some business matters with his director and got necessary instruction from him.
d)It was introduced into the market at the beginning of the year and since then it has been a great success.
e) Has your company done good business?
– Yes, they discussed it two days ago.
ex.2
1.I’d like him to change the contract terms.
2.I expected them to introduce changes into the computers.
3.I saw Mr.Dunn buying some envelopes at the post office ten minutes ago.
4.When do you want the new machines to be shown in operation?
5.What contract terms do the buyers usually want the selling companies to offer?