1. _____ of water makes Death Valley a desert, but it is by no means devoid.

A. Lacking B. Being lack

C. Because of lack D. Lack

2. In recent years much more emphasis has been put_____ developing the students productive skills.

A. onto B. in C. over D. on

3. Many workers were organized to clear away _____ remained of the World Trade Center.

A. those B. that C. what D. where

參考答案及解析：

1. D。lack作名詞，后加of短語。如用A項，lacking是及物動詞的動名詞，后面不用介詞of或作不及物動詞，后面加介詞in…。故答案為D。

2. D。put/ place/ lay emphasis on 是固定搭配，表示“強調，注重”。故答案為D。

3. C。該題空格處缺少的是連詞，且在從句中作主語，所以排除A、D；that在名詞性從句中只起連接作用。故答案為C。