_______ to what you might think,it is safe to swim with AIDS patients in the same pool. [ ]

It is difficult to________one twin from the other.They almost don’t________from each other.[ ]

In order to decrease the death rate, the rescue team are in saving more lives.

-Why didn’t you attend the party ________ in the hall the other day?-I just wanted some quiet time by myself[ ]

It is the first time I ______ this kind of music.