The two elderly sisters, ____ so long, held each other.
. --- What do you think made Mary so upset? --- __ her new bicycle.
. They ___ out because the light’s on. Let’s go upstairs and have a look.
. I think ___ necessary ___ a foreign language.
. At the meeting I suggested that every class ___ divided into eight groups.
. --- He eats too much fat and sugar. --- That is ___ he ___ on weight very easily.