People _____ go on holiday to Mars some day

1 People _____ go on holiday to Mars some day 
A can        B must              C might              D should
2 I'm fascinated by the house that looks like _______UFO
A the         B a              C an               D 0 
3 ________ people do not necessarily have_________ of all
A The happiest - the best               B happiest-best             C The happiest-best                  D happiest-the best
4 I believe that people __________ definitely make the world greener in the future 
A will            B can                  C won't                    D might 
5 If Nam _________ plastic bags,he will help protect the environment
A didn't use        B will use          C uses           D doesn't use
6 What ______ if we live in the noisy surroundings?
A happened           B will happen               C happens          D happen 
7 You _______ pass the exams to study in heigher classes
8 With high-end washing machines,we provide the ______ laundry service
A cleaner and safest         B cleaner and the safest            C cleanest and the safer        D cleanest and safest 
9 The next generation of robots ______ use electricity,but solar power 
A didn't      B don't               C won't            D couldn't 
10 The beach will be full of garbage ______ dustment don't collect it 
A so          B if      C but        D unless