1. An employment survey revealed that demand for high-level executives _______
decreased unexpectedly this year.
答案是has 但我挑了have 請問這種has have到底如何判別 我常常搞不懂QQ
2. The tuition of a public university is usually much lower than (that of) a p
rivate university.
括號中為什麼不能用 which of 呢？
3. Because of the Eskimos’ constant exposure to cold weather, they have long
recognized ______.
空格是 the body’s need for fat
為什麼不能選 how fat the body needs.
4. Americans have come to fear the West Nile virus, (because it is transmitted
) by the common mosquito.
為什麼括號中為不能選being transmitted呢？
這種句子被動式且主詞相同不是可以省略主詞並把be動詞變being嗎？
先謝謝各位了QQ