---Oh, your computer is so nice. ____ did you buy it?---Thanks. I bought it in Wangfujing Dajie.
Bill has made great progress __________the help of his teachers. A. for B. with C. under
-Here is a schoolbag. Whose is it? -Oh, it’s __________. Thank you. A. my B. mine C. me
There is no living thing on __________moon. A. the B. a C. 不填
— You have never seen the dinosaur eggs, have you? —________. How I wish to visit the Dinosaur World.
—Listen! Is that Millie singing? —No. It _____ be Millie. She has gone to Beijing.