____ it snowed heavily yesterday, nobodyin our class missed the lesson． A．Though

If you smoke, please go outside.

I always try to be________to others when walking my pet dog along a pavement and step to the side with my dog to let them pass by

Can you keep a secret?—You ________ worry—I’m not going to mention it to anyone.

It’s unfair to judge historical events by today’s __________.