1. Be ...! Everything will be better.
A. pessimistic B. optimistic C. anxious D. bravery
2. He ... himself to drugs, so he will die sooner.
A. devotes B. addicts C. contributes D. abides
3. ... of pickpockets when you are in the markets.
A. Awake B. Remind C. Beware D. Suppose
4. He sometimes behaves ... and we can't control him.
A. badly B. sadness C. bad- tempered D. bad
5. They have been raising money for a center of ... for 12 years.
A. the handicapped B. Blind C. a blind D. handicapped
có giải thích giúp mình ạ