-I want to see Mr. White. We have an appointment.
-I'm sorry, but he is not ________ at the moment, for the meeting hasn't ended.
busy
active
concerned
available
To his surprise, Jack found his son _______as Santa Claus on Christmas Eve.
______ his expression, he didn’t _____the driving test.
The man kept silent in the room unless_______.
Let those in need ________ that we will go all out to help them.
Anxiously, she took the dress out of the package and tried it on, only ________ it didn’t fit.