A great deal of reseach______ (do) into the possible causes of cancer.
举一反三
- Lung cancer is the No.1 cancer to kill American people. No cancer kills more American than lung cancer.
- What kind of cancer may the sunlight protects us from? A: Stomach cancer. B: Skin cancer. C: Lung cancer. D: Blood cancer.
- As you know, a great deal of work (do) ______________ on the psychology of learning so far.
- Premier Zhou ( ) by the Chinese people. A: is thought of a great deal B: is thought a great deal of C: is thinking a great deal D: is a great deal thinking of
- Paragraph 1（） A: How is cancer treated B: Does cancer always cause pain C: Can cancer be prevented D: What is cancer E: How common is cancer F: What causes cancer