He doesn't like to talk with others,but Eric always________空

Mike and Eric are my best friends at school.We study in Class 3.The two boys are twins.But some student don't know that they are twins,because there are many differences between them.Mike doesn't look like Eric.Mike is short,but Eric is tall.Mike is thin ,but Eric is a little bit heavy.Mike doesn't wear glasses.His twin brother is a boy with glasses.Mike is a quiet boy.He doesn't like to talk with others,but Eric is always talking.Eric likes to tell jokes.And he is very popular in our school.We ofter say him,"Hi,Eric.40 is te joke today?"Isn't that iteresting.