Unit 4 Topic 1
When was it invented?
Section B
(  )1.He ___play computer games unless he finished his     homework.   A. was allowed to B. was not allowed to C. allow to(   )2.We all know that paper ___wood.   A. is made of   B. is made into  C. is made from(   )3.This kind of machine ___in 2006.   A. is invented   B. is made   C. was invented(   )4.A(An)___is used for taking photos.   A .Camera   B. Lift     C. MP3 player(  )5 .We should spend more time ___because it’s too      important.   A ...