1 . It’s reported that the elderly would become victims ________ a big con (骗局). （用适当的词填空）

2 . In our class there are 50 students, half _______whom wear glasses.（用适当的单词填空）

3 . Sailors measure the depth______the water in fathoms. （用适当的单词填空）

4 . This kind of fruit ________ large amounts of vitamin,     vitamin C.
A. includes; including                       B. takes; containing     
C. holds; included                                     D. contains; including