（ ）1. ---Have you watched _______ documentary called Water Rhyme Jiangsu?
---Yes. It’s such _______ amazing one that I have watched it again and again.
A. the； a B. a； the C. the； an D. a； an
（ ）2. I like my English teacher because she always makes her class _______ and interesting.
A. lively B. lovely C. likely D. lonely
（ ）3. To protect the environment,_______ people in Yancheng drive to work every day.
A. smaller and smaller B. fewer and fewer C. more and more D. less and less
（ ）4. ---The first airliner made in China took off ______ the afternoon of May 5, 2017.
---It’s great and it can fly ______ a speed of 248km/h.
A. in； at B. on； in C. on； at D. in； in