以下英文问题为什么选择以下答案,请给出理由,谢谢!

  1。People are more ___B____ to spend money on goods with an attractive look than those without。 A。 attracted B。 tempted C。 persuaded D。
   tended2。We all know the truth B there are air, water and sunlight, there are living things。 A。 in wherever B。 that wherever C。
   where D。 that3。Yon can see A of cars in the square。 A。 a quantity B。 a plenty C。 an amount D。
   the number4。 It was ___A___ he saw the doctor coming out of the emergeney room with an expression as grave as a judge _______ he realized the seriousness of his wife’s illness。
  A。 not until…that B。 after…when C。 until…then D。 before…that5。Please telephone me half an hour ____B___。 A。 in charge B。
   in advance C。 in time D。 in front。