精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区

Scientists have many theories about how the universe ___ into being.

A. came                                     B. was coming

C. had come                               D. would come

Scientists have many theories about how the universe ___ into being.

A. came      B. was coming

C. had come   D. would come

Scientists have many theories about how the universe ___ into being.

A. came      B. was coming

C. had come   D. would come

Scientists have many theories about how the universe ___ into being.

A. came        B. was coming       C. had come   D. would come

Scientists have many theories about how the universe ___ into being.

A. came        B. was coming       C. had come   D. would come

Scientists have many theories about how the universe????????? into being.

A. came??????????? B. was coming??????? C. had come?????? D. would come

Scientists have many theories about how the universe ___ into being.

A. came      B. was coming

C. had come   D. would come

 Scientists have many theories about how the universe ___ into being.

A. came      B. was coming

C. had come   D. would come

Scientists have many theories about how the universe ___ into being.
A. came      B. was coming
C. had come   D. would come

 Scientists have many theories about how the universe ___ into being.

A. came                                     B. was coming

C. had come                               D. would come