Tom studies _______. He _______plays with his friends.
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
I had a good time my stay in Chengdu this summer vacation.A. on B. during C. in
We a party to welcome the new students next Friday evening.A. have B. had C. will have