用适当的介词填空.1.we must be careful ___ our diet.2.there is much s

用适当的介词填空.1.we must be careful ___ our diet.2.there is much suger ____ this kind of fruit

1.We must be careful 【of】our diet.我们必须小心我们的饮食.
2.There is much sugar 【in】 this kind of fruit.这种水果中有很多糖.