This ball is solid.的相關(guān)資料：
臨近單詞
this child
this
this money was fraudulently obtained.
this/yesterday/tomorrow afternoon
This question worries many Americans.
This home-made pen writes smoothly.
This polyester shirt doesn't breathe.
This automatic machine dispenses coffee
This car/dress looks quite modern.
This strategy is uncannily effective.
This colleague is always politicking.
This underground vault is theftproof.
