【C8】A．or wasteB．wasteC．wastingD．to waste

In order to culture and propagate enough bacteria to treat the body and galley wastes____A

【C8】A．yetB．butC．andD．or

Biodiesel can be made from coconut and palm oil, or from waste cooking oil.A．RightB．WrongC

The boss told him " ____ wasting time! Fish or cut bait.A) ResignB) BlockC)QuitD)

【C8】A．exchangeB．incomeC．wasteD．increase

【C8】A．sayingB．to sayC．speakingD．to speak