这个问题该如何回答？

你愿意和美国小伙子约会么？

愿意，就 Yes,I'd like.
否则，I am sorry.

would you date an american guy?
你愿和一个美国小伙子谈恋爱吗?
Yes,I'd like./No,I am sorry.

你愿和一个美国小伙子谈恋爱吗?
date sb有约会,谈恋爱的意思.

Yes,I'd like to 不该省去to

愿意，就 Yes,I'd like to
否则，I am sorry.