Li Gang and Chen Xia took part in the calligraphy competition. The word 1 1 can be expressed in four different punctuation marks?

Li Gang and Chen Xia took part in the calligraphy competition!

Li Gang and Chen Xia took part in the calligraphy competition.

Li Gang and Chen Xia took part in the calligraphy competition. ......

Li Gang: "Did Chen Xia take part in the calligraphy competition?"

Li Gang: "Chen Xia took part in the calligraphy competition!" "