a)
indicate, suggest
b)
in general, generally
c)
commonly, often, sometimes, usually
d)
tend to be, seem to be, appear to be, are generally
e)
sometimes, occasionally, often
f)
suggest, indicate
g)
may be, might be, could be
Possible answer:
a)
indicate, suggest
b)
in general, generally
c)
commonly, often, sometimes, usually
d)
tend to be, seem to be, appear to be, are generally
e)
sometimes, occasionally, often
f)
suggest, indicate
g)
may be, might be, could be