Give the correct form of the words in parentheses :
1. She often feels ______ when she gets bad marks . ( happy )
2. My stomachache ______ after I took the tablets . ( appear )
3. My favourite subject at school is physical _______ . ( educate )
4. Do you know that video games may be _______ ? ( addict )
5. Catching the common cold is ______ for everybody . ( please )
6. My father has a _______ computer . He often brings it with him when he's away on business . ( port )
7. Some of the children _______ boys , play marbles when there is a break . ( main )
8. My sister has a big _______ of stamps . ( collect )
9. I have _______ time to play than my friends . ( little )
10. When my sister and I ( live ) ______ in Hue we ( visit ) _____ a lot of interesting places .