Complete the correct form of the verb that agrees with the subject
23. The President, accompanied by his wife, (be) ............................ traveling to India.
24. The use of vitamin supplements and herbs (be) ___ becoming increasingly popular among Americans.
25. While many studies claim that vitamins and herbs can improve health, there (be) ___ a lot of controversy about their safety.
26. The Food and Drug Administration (FDA) (do) ___ not regulate vitamins and herbs.
27. Most experts (believe) ___ that herbal supplements are mild and somewhat harmless.
28. Still, anyone who (take) ___ too much of a vitamin or herb could suffer negative side effects.
29. For example, some medical problems (have) ___ been linked to overuse of ephedra, an herb taken by people to lose weight.
30. Some research (suggest) ___ that Vitamin C may help prevent cancer.
31. People who (take) ___ more than 1,000 miligrams of vitamin C daily may experience diarrhea or kidney stones.
32. Advertisers say that the herb "kava kava" (reduce) ___ anxiety and insomnia.
33. Using large amounts of kava kava (be) ___ not wise as muscle, eye or skin problems could result.
34. The danger of long-term use of vitamins and herbs (be) ___ still unknown.
35. There (be) ___ a lot of evidence that vitamin-rich foods are beneficial.
36. However, whether the use of supplements (be) ___ helpful or not is still being debated.
37. Most people (be) ___ able to get all the vitamins they need in the foods they eat.
38. A daily diet that (contain) ___ foods from the 4 groups should supply all the nutrients a person needs.
39. Eating 5 servings of fruits and vegetables daily (be) ___ said to provide all the essential vitamins we require.
40. The best way to get the necessary vitamins and minerals (be) ___ naturally, through a healthy diet.