The best synonym for sometimes is occasionally. You can also say from time to time, now and then, periodically, intermittently.
uninteresting
Cooliousis
high up!!!
You might be able to use words like 'left', or 'departed'.
However, instead, on the other hand, except, besides, nonetheless, otherwise, although, despite the fact, meanwhile & although
'also' 'in addition' 'as well as' sometimes 'but' can be used 'further to this'
you are not
two
rather, preferably, alternately
since
execute
uninteresting
Abscond.
Cooliousis
Special?
high up!!!
Thou, ye, thee