Present continuous tense does not usually pose any problems to students. It’s pretty straightforward, and most students use it appropriately on its own in ESL classes.
A fill in the blanks worksheet on leisure activities theme
Present continuous tense can be a problem when students try to conjugate the verb without looking at the meaning of the sentence. They usually miss the negative or even question forms in the exercises. This worksheet, which is written in leisure activities theme, covers different personal pronoun forms of present continuous, aka present progressive, along with negative and question forms.
The online version of this materials is here.