_________ in long forms __________ a lot of time and few people like it.

问题描述:

_________ in long forms __________ a lot of time and few people like it.
A Fill /takes B To fill /take CFilled /take D Filling/takes
为什么选D,

filling是动名词作主语,takes是它的谓语.动名词作主语谓语用单数.