Revision of the Passive Voice are killed 1. Every year over 29,000 antelopes ________ (kill) in Tibet. --- 一般现在时被动语态 were killed 2. In the past, the elephants __________ (kill) by farmers.--- 一般过去时被动语态
3. In the past twenty years, a large number of have been set up bamboo areas ______________ (set up) to help pandas grow. --- 现在完成时被动语态