Exercises for U12一、单项选择 20分()1. Mrs Zhang gave us on how to learn math well.A. some advicesB. many advicesC. some adviceD. an advice()2Smoking is bad for your health. You should .A. give up itB. give up themC. give it upD. give them up()3.I will wait I hear from you.A. untilB. sinceC. whileD. because()4.Mike water five days ago.A. ran outB. used aboutC. ran out of D. has run out()5. Her father lives a simple life