18．Them are some dangerous fishes in this fiver，and I've warned Jack         hem

    A．not to swim         B．to not swim          C．swim not to          D．to swim not

17．Both has a beautiful              ．Listen! She is singing very well．

    A．voice                   B．look                    C．sound                  D．smell

16．Please            the lights when you leave the classroom．

    A．turn in                 B．turn up                C．turn off                  D．turn out

15．About            of the books in our school library are written in Chinese．

    A．four-fifth             B．four-fifths            C．fourth-fifths         D．fourths-fifth

14．Millie makes her cousin        the flowers every day．

    A．waters                 B．watering              C．water                     D．to water

13．We have so many kinds of guitars for you           ．

A．to choose                                                B．to choose from

C．to be chosen                                              D．to be chosen from

12．The number of the students in our school            about eight hundred．

    A．are                      B．were                    C．is                        D．be

11．Sandy was too nervous          the teacher's question．

    A．answer                B．to answer             C．answering            D．answers

10．Food on Mars will not be as         as they are on Earth．

    A．tasty                    B．taste                    C．tastier                  D．tastes

9．Someone          the school gate now．

A．are waiting for       B．is waiting for       C．is waiting at         D．are waiting at