Подчеркните в каждом предложении глагол-сказуемое и определите его видовременную форму и залог.
1. The factory has increased its production greatly. 

2. The partners are discussing the terms of payment now. 

3. He started a small advertising agency after he had retired from the military service.

4. The children spent the whole day indoors because it was raining heavily.
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Подчеркните в каждом предложении Participle I и Participle II и установите функции каждого из них, т.е. укажите является ли оно определением, обстоятельством или частью глагола-сказуемого.
1. We have carefully studied all the technical data that we got from you. 

2. The machine tool advertised by Brown and Co will be in great demand on the 

market.
3. By 5 o’clock they had cleared up all the points in the firm’s offer. 

4. Peter saw her at the University library when he was working for his final examinations

1/  has increased - present perfect active voice

2/ are discussing -present continuous active voice

3/started- past simple active voice, had retired -past perfect active voice

4/spent- past simple active voice, was raining- past continuous active voice

We have carefully studied (Participle II - часть сказуемого) all the technical data that we got from you

The machine tool advertised(Participle II - определение) by Brown and Co will be in great demand on the   market.

By 5 o’clock they had cleared (Participle II - часть сказуемого) up all the points in the firm’s offer.  

Peter saw her at the University library when he was working (Participle I - часть сказуемого) for his final examinations