Neither of the boys _________ (has / have) finished his homework.
John was extremely tired. He completed his work.
Use: Although
Although John was extremely tired, he completed his work.
or
John completed his work although he was extremely tired.
The bouquet of flowers _________ (smell / smells) wonderful.
smells
She does not like apples. She does not like oranges.
Use: Neither... nor
She likes neither apples nor oranges.
Either the teacher or the students _________ (is / are) going to clean the classroom.
are
He had just stepped out of the house. It started to rain heavily.
Use: No sooner... than
No sooner had he stepped out of the house than it started to rain heavily.
Rule: Requires inversion ("had he") and must use "than", not "when".
Every one of the participants, including the two reserve players, _________ (was / were) given a medal.
was
The soccer team _________ (is / are) putting on their uniforms in the locker room.
are