A man does not know the difficulty of anything __________ he does it personally.
There are two small rooms in the house, ______ serves as a kitchen
The result is not the same ______ they had expected, ______ was rather disappointing.
Although he was in poor health, Robert succeeded other more famous engineers failed.
You can eat food free in my restaurantyou like.
—when has the country been open to international trade? —1978,I suppose.