He chooses

We think/reflect (use the verb réfléchir)

she finishes

I am getting old (use the verb vieillir)

You (singular) fill your glass

We go pale (use verb pâlir)

he is getting fat (use the verb grossir)

she blushes (use rougir)

we are succeeding (use réussir)

I finish a cup of coffee

are you thinking? (use verb réfléchir)

he chooses a bottle of wine

you choose! (use "vous")

lessons (les cours) finish at 4 pm

they (feminine) are getting thin (maigrir)