It is b_____ that ancient Chinese invented power.
It is b_____ that ancient Chinese invented power.
It is believed that ancient chinese invented paper 改为同义句
The paper was invented many c_______ ago by ancient Chinese.
It is said that ____umbrella was invented over four thousand
it is said that ___umbrella was invented over four thousand
It's said that _____ umbrella was invented by Chinese中的冠词填什么
The ancient chinese ___(发明)tea that is now wery popular all
Wind power is an ancient source of energy ______________we m
It is a common knowledge that black tea is invented by chine
It is known to all that ____computer was invented in the UK
It is known that the gun powder was first invented by the ch
It is said that the bicycle was invented ---- A.in 1880s B i