1. Many lifestyle patterns do such __ great harm to health that they actually speed up __weakening of the human body.
A. a; / B. /; the C. a; the D. the; a
2. I’m sure you will do better in the test because you ______ so hard this year.
A. studied B. had studied C. will study D. have been studying
3. He had his camera ready _______ he saw something that would make a good picture．
A． even if B． if only C． in case D． so that
