Not if you are using the form_summary keyword. You will need to totally re-code all the responses with keywords for each individual question. Some examples of what I do:
Submission Time: %globals_date_r%
%question_name_6050_q1% : %response_6050_q1%
%question_name_6050_q3% : %response_6050_q3^empty:-- blank --%
%question_name_6050_q6% : %response_6050_q6^gt:1:Agreed:Not agreed%
%question_name_6050_q7% : %response_6050_q7^gt:1:Yes:No%
*Note, the ^gt:1 is used to detect if it's got a value, not necessarily a numeric value. This is preferable to ^empty and ^notempty as it gives you both true/false options, whereas empty/notempty will display the actual value when these conditions evaluate to false. Often this behaviour is useful, but not always.
Like the forms page contents bodycopy, if you use the generic out-of-the-box layouts you pretty much get stuck with the basic layout. If you want to customise it you need to go down this more intensive coding path. It's more work, but in my experience definitely worth it and very powerful.
Update: So to actually answer you question....
%response_xxx_q1%<br /> <!-- Name -->
%response_xxx_q2%<br /> <!-- Address 1 -->
%response_xxx_q3%%response_xxx_q3^notempty:<br />% <!-- Address 2, only add break if has value -->
%response_xxx_q4%<br /> <!-- Town -->
%response_xxx_q5%<br /> <!-- Country -->
