—How much did you pay ____ the iPad ? ---3,000yuan
A. on B. for C. with
Study hard, ______ you will pass the exam
A. so B. and C. but
Look! The children are swimming in the _______.
A. zoo B. pool C. supermarket
---- What ____ your teacher ____ now ?--- He is cleaning his office .
A. are; doing B. is doing C. are do
Listen ! Your mother is talking with your aunt _______ the phone.
A. on B. in C. at
--- Do you like the show, Amy ?--- No, I think they are _____ boring .
A. kinds of B. a kind of C. kind of
