They live on a busy main road. ______ must be very noisy.
| A．There | B．It |
| C．That | D．They |
It was after he got what he had desired _____ he realized it was not so important.
| A．that | B．when | C．since | D．as |
It is not who is right but what is right _____ is of importance.
| A．which | B．it | C．that | D．this |
I just wonder _____ that makes him so excited.
| A．why it does | B．what he does | C．how it is | D．what it is |
It was not until she got home ___ Jennifer realized she had lost her keys.
| A．when | B．that | C．where | D．before |
It was with great joy _____ he received the news that his lost daughter had been found.
| A．because | B．which | C．since | D．that |