He ______ for a walk in the park when he was young.

单项选择题The man loves nature and the soil. That is why he has bought a piece of land in the country and ______ to grow his own vegetables.

A. taken the difficulty
B. had the trouble
C. had the difficulty
D. taken the trouble

单项选择题They ______ nod to each other when they met, and now and then they ______ exchange a word or two.