这门课程是为那些对绘画表现出浓厚兴趣的人开设的。

The class is for those who show a ___keen interest in painting.

特蕾莎不太喜欢猫。

Theresa isn’t too ___keen ___on cats.

如果大家都认为年轻人不热衷于体育运动，那是不正确的。

If everybody thinks that young people are not ___keen ___on playing sports, it is just not true.