Ⅱ听对话，判断下面句子正(T)误(F)。每组对话和问题读两遍。(5分)
( )1.Jack studies for a test by working with a group.
( )2.Linda can’t remember some of the words.
( )3.Mike used to be thin.
( )4.Chinese is spoken by the largest number of people in the world.
( )5.The students can use English-Chinese dictionaries in class.
