你觉得朋友的书包很漂亮,你应该说:________A.It's pretty. B.It's cheap. C.It's expensive.
( )I am _____ in the sky. A. fly B. flys C. flying
( )I am having _____ ice cream. A.a B. an C./
( )She’s _____ breakfast. A. having B. have C. has
( )It _____ too hot. A.get B. getting C. gets
( )He’s walking _____ the park. A. in B. of C. on