选择题：11.I’d ________ it if you would turn the radio do

11.I’d ________ it if you would turn the radio down.
A. concern B. appreciate C. amuse D. amaze
12.The engine failed and the pilot had to ________ the plane ________ in the sea.
A. put ... down B. hang… up C. end… up D. now …that
13.His nationality isn’t __________ to whether or not he’s a good lawyer.
A. efficient B. effective C. relevant D. virtually
14.Your advice is exceedingly ________ to me in my research.
A. massive B. contribution C. valuable D. revel
15.I took careful notes which later ________ in the exam.
A. makes me happy B. caused me in trouble
C. had me in a good shape D. stood me in good stead