As is recorded in history, silkworms (蚕) were first raised by a woman in _____ is today Hebei Province.
— How do you find your trip to the Great Wall? — We had an awful time! ______, George got sick the day we arrived.
It was in the wooden house______ a businessman built by collecting funds______ the great scientist carried out the experiment that made a difference.
----To build a factory is beneficial to the locals, but on the other hand, it will be not environmentally friendly. ---- That’s_____ environmental protection organizations disagree.
I know what we're doing is legal, but ____ it doesn't feel right.
I tried to apologize, but I think I ____ it the wrong way.