с английским Выписать из каждого предложения глагол-сказуемое и определить его видовременную форму и залог, указать инфинитив. 1. Synthetic materials have become cheaper since the cost of production is lower now.
2. The president was guarded by security agents.
3. He won’t be influenced by his father’s opinion.
4. They were discussing the lecture when I came in.