1.Every year, many ________ (tour) go to Zhalong to watch birds.
2.—Is drawing as difficult as swimming ? 
  —No, it's much ________ (easy), I think.
3.The children always enjoy ________ (they) at the weekend.
4.Speak louder, please. I can't hear you ________ (clear).
5.Tigers are ________ (protect) animals. We can't hunt them .