We just need to keep _____ on it and not give up.

阅读理解。
    We parents like to make sure that our children are eating well and getting all the nutrients (营养) they
 need. Children need two or three kinds of vegetables every day.
     A simple way to get children to eat vegetables is eating them ourselves. Following our habit, they may
  start eating vegetables. Don't say things like, "if you eat your vegetables, you can have desserts." These
 methods work for a little while but can possibly lead them to hate vegetables more. Giving your children
 new varieties (多样性) which will help her or him develop a taste for trying new things.
     Sometimes the simple things just don't work. We have to start becoming a little creative when it comes
  to making our children eat these vegetables. By doing this in the beginning when they are small, it will
  hopefully help them learn to love vegetables.
     Think of creative ways to make children eat vegetables. For example, cut up vegetables like carrots,
 tomatoes, and assemble (集合) a creative way on a plate for an afternoon snack. Or try using cheese
 sauce either by dipping (浸) vegetables or by putting the cheese right on top of the uncooked vegetables.
     If you prefer, you can also add a teaspoon of sugar on top of cooked green beans and peas to give
 them a little sweeter taste. Doing this shouldn't lead to a sweet tooth as long as you only give them a small
  amount.
     If you have a child that refuses to eat vegetables, some of these suggestions I've listed will help to turn
 that around. In the end, you're not just getting them to eat vegetables, you are helping them to live a
 healthier lifestyle.
1. According to the text, all the following ways to get children to eat vegetables are creative
   EXCET _____.
    A. making vegetables much sweeter
    B. putting cheese on top of vegetables
    C. preparing carrots in an attractive way
    D. adding some cheese sauce to vegetables
2. If you want your children to develop the habit of eating vegetables, you should         .
    A. be very patient to them
    B. set an example to them
    C. give dessert to them as an award
    D. cut vegetables into different types
3. Which of the following is Not true according to the passage?
    A. Children need to eat vegetables every day.
    B. Parents should help children live a healthy lifestyle.
    C. Sugar can make children keep a healthy lifestyle.
    D. It is necessary to think of creative ways to make children eat vegetables.
4. The best title of this passage would probably be "        ."
    A. Vegetables Are Important for Children
    B. Few Children Like Eating Vegetables
    C. Different Kinds of Vegetables for Children
    D. How to Make Your Children Eat Vegetables