小弟麻烦各位了1 _____and difficult to understand,this book isn’tsui

小弟麻烦各位了
1 _____and difficult to understand,this book isn’tsuitable for a young child
A To be bored
B Be boring
C Bored
D Boring
2 She just doesn't believe in me;______is Tom that she still believes in
A he B it C this D which
3 ________that it was raining,George put on his raincoat
A To see B See C To be seen D Seeing
A