Exercise 1: Fill in the missing letters

s_ra_bl_ = **Scrabble** ba_k_a_mon = **Backgammon** dom_no_s = **Dominos** b_lli_rd = **Billiard** ma_bl_s = **Marbles** _he_s = **Chess** _i_s_w_p_z_les = **Jigsaw Puzzles** d_r_s = **Draughts**