IV.    Choose the best answer a, b, c or d to complete the sentence.

1.  Many people are interested in living ________ the planet Mars.

     a. in                      b. on                     c. at                       d. by

2.  Will robots look ________ the elderly and children?

     a. for                     b. at                      c. into                   d. after

3.  In the future, we’ll live in a hi-tech house on ________.

     a. moon                b. a moon             c. an moon            d. the moon

4.  There will be a helicopter on the roof ________ I can fly to school.

     a. so that               b. although           c. because             d. in order

5.  A smart ________ will keep track of your food stocks and suggest recipes based on food items you already have.

     a. television           b.fridge                 c. dishwasher        d. clock

6.  We ________ have flying cars in 2050, so there will probably be fewer cars on our roads.

     a. can                    b.should               c. must                  d. might