It’s the gases ___ natural gas and the burning of coal give off ____ add to the overheating of the earth.
| A．that; what | B．that; that | C．which; which | D．that; which |
相关知识点
推荐试卷
It’s the gases ___ natural gas and the burning of coal give off ____ add to the overheating of the earth.
| A．that; what | B．that; that | C．which; which | D．that; which |
试题篮
()
粤公网安备 44130202000953号
