Do you like the new pen?--- Yes,it ____ smoothly.

问题描述:

Do you like the new pen?--- Yes,it ____ smoothly.
a、is written
b、is writing
c、writes
d、wrote

c、writes
write smoothly是“书写流利”的意思,虽然逻辑上与pen之间有被动关系,但只用主动式.
又因为it是主语,所以要填writes