After a long walk in the sun, they wanted to drink _____.
--- do you want to be when you grow up?--- I want to be a pilot and fly in the blue sky.A. Which B. Who C. What
--- It is very cold this winter.---Yes, but it was colder last winter, I remember.A. already B. even C. more
I think _ is impossible for me to climb such a high mountain.A. it B. this C. that
Let's stop for a few minutes. I'm tired to walk any farther.A. so B. enough C. too
--- __ salt did you put in the soup?--- None. I forgot.A. How much B. How many C. How long