16£®—I heard you visited Chengdu during the National Day holidays£®What’s it like? 

—______I’d like to stay there forever.

A£®It’s really fascinating!                                       B£®Hard to say.

C£®I couldn’t agree more.                                       D£®Oh, come on!

17£®The Shenzhou-12 crew, ______ had spent 3 months aboard the space station, returned to the earth just in time for the Mid-Autumn Festival on September 17.

A£®whose                           B£®which                          C£®that                              D£®who

18£®______ you’ve set you mind on the goal, you must make every effort to get it achieved in spite of challenges.

A£®Now that                      B£®As if                             C£®Unless                         D£®In case

19£®The author’s latest book The Evening and The Morning sold millions of copies as soon as it______.

A£®had published                                                          B£®has been published       

C£®was published                                                          D£®published