The engineers are so busy that they have no time for outdoor sports activities， they have the interest.
A. wherever
B. whenever
C. even if
D. as if
网友回答
A. wherever
B. whenever
C. even if
D. as if
解析：C
解析 句意为：工程师们都很忙，以致于他们没有时间去做户外运动，即使他们有兴趣。even if即使，符合句意。