Complete the following sentences,using the correct words to introduce the noun clauses.
1.As I had failed many of my exams ,I began to think about ( ) I could improve my scores.
2.( ) my teacher advised me to do first was to make an action plan.
3.I did not know ( )my plan would work or not ,but I decided to follow it anyway.
4.( ) surprised me most was how soon my exam scores improved .At the end of term,my parents were so happy that they decided to hold a party for me.
5.I have a lot of friends at school ,so I told them all that ( )wanted to come to my party would be very welcome.
6.I wanted to cook some nice food for the party .I bought a cookbook,which explained ( )French food is prepared.
7.I read the book over and over again ,but it was very difficult and I had no idea ( )I was supposed to do.
8.The next day,I had to prepare the food for the party.I was happy ( ) my mother could help me.
9.Later that day,my friends arrived and we all enjoyed a lovely meal together.They all praised me for my good results.I explained that is ( ) we were having this lovely party.