Riddle: Streets can go through me, but roads can't. Goodwill can go through me, but not the Salvation Army. Trees can go through me, but bushes can't. Football can go through me, but not rugby. Can a tennis ball go through me?
Answer: Yes. For something to go through, it has to have two of the same letter in a row. Tennis ball has that occurring twice. Nn and ll.
Riddle: I brighten your day but live in the shade. What am I?
Answer: A lamp.
Riddle: I warm the heart and I chill the skin, I can take human form, but I may vanish into nothing, soon after I am born. What am I?
Answer: A snowman.
Riddle: I am who I am, and that's without thought, my mind knows more while my heart knows a lot. Who am I?
Answer: Dr. Suess.
Riddle: I can fill a room or just one heart. Others can have me, but I can't be shared. What am I?
Answer: Loneliness.
Riddle: I can't be bought, but I can be stolen with a glance. I'm worthless to one, but priceless to two. What am I?
Answer: Love.
Riddle: I feel your every thought. I feel your every move. I'm with you from birth and I'll see you rot. What am I?
Answer: Your reflection.
Riddle: You see me at night, by day you tell everyone about me. I come back looking differently than before. I sometime leave you in the darkness. What am I?
Answer: A dream.
Riddle: I'm with you from birth. I make you feel everyday. Without me, you're nothing. What am I?
Answer: Your soul.
Riddle: When are there more millimeters than centimeters?
Answer: Always. There are 10 millimeters in 1 centimeter.