Mountain climbing _______ be tiring and many people feel sick as the atmosphere gets thinner.

He ________ his post because he had been offered a better job．.[ ]

下列各项中，对句式的判断不正确的一项是

Life is harder for Senior Three studentsthroughout China．Hardly_____ endless exercises or tests．

Can you describe the people and the things ______ have been seen in Tibet