Yes, you can use the <<switch>> macro to do that. Some people use that trick to combine a series of passages that have no choices. For example:
<<if ndef $textGroup>><<set $textGroup = 1>><</if>><<switch $textGroup>>
<<case 1>>Initial story text.
<<link "Link Text 1" `passage()`>><</link>>
<<case 2>>Next story text.
<<link "Link Text 2" `passage()`>><</link>>
<<default>>Final story text.
<<unset $textGroup>>[[Next Passage]]
<</switch>><<if def $textGroup>><<set $textGroup += 1>><</if>>
If you want to add more passages, just add more cases, following the same format as above. Also, make sure that the final passage, in the
<<default>> case, does
<<unset $textGroup>> to clear out that variable. The final passage can branch to multiple passages without a problem.
The story text doesn't need to be only one line. It can be mutiple paragraphs. I just used one line here to keep the sample short.
If you want another passage to go to a specific case above, then set
$textGroup to that case number before they go there, like this:
[[Click here to skip to the second case|Combined Passage][$textGroup = 2]]
Hope that helps! :-)