Напишите предложения, используя пассивную форму: 1) many different bacteria … (find) in the mouth. 2) the inside of the mouth … (line) with a mucus membrane. 3) the tongue, lips and jaw … (need) to produce the sounds. 4) the mucous membrane …(involve) in the process of absorption and secretion. 5) intense blood pressure … (produce) by increased blood flow in the case of infection. 6) severe pain inside …(cause) by the increased blood flow. 7) specialised cells …(deliver) by the increased blood flow to the place of infection