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t rains tomorrow. ( )15. Physics much easier for me since Mrs. Yang began to teach us. A. have been B. has been C. was D. were ( ) should do what we can_______English. practice to speak practice speaking speaking to speak ( )17. — Do you know the song Gangnam Style? — Of course. It _______interesting. ( )18.— What do you think of Mr. Green ?…I find _______ difficult to work with him. A. this B. them C. it D. that ( )19.— Your_______English is very good. …Thank you . A. speak B. speaking C. to speak D. spoken ( ) you have difficulty in learning English, you should ask your teach