A.turn on the captions for reference.
B.watch in the most relaxed possible way.
C.pause when encountering new expressions.
D.use an English-English dictionary.



A.Following classroom instructions.
B.Watching plenty of movies online.
C.Breaking down cultural barriers.
D.Backpacking around the world.
A.19
B.26
C.6
D.153
A.The number of casualties was 153 on Wednesday.
B.There accident killed 172 passengers on board.
C.The crash took place when the plane was landing.
D.The crash was caused probably by the engine fire.