——Did you climb the mountain yesterday ?——_______________________ A.Yes , It took us thirty minutes to climb to the top B.NO , I went to the zoo.
( )(7) Let ___ introduce my sister to you . A. I B. my C. me
( )(6) He often ___ people in his work . A. help B. helpsC. helped
( )(5) Sorry , I ____ know . A. do B. does C. don’t
( )(4) Look ____ the newspaper . A. in B. at C. on
( )(3) Who is _____? A . she B. his C. your