同学你好，该知识点来自沪江网校《新概念英语2、3、4册连读【双11专享班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~
Key to SD Exercises
1 This car is too expensive to buy. This car is too expensive
for me to buy.
2 This car is cheap enough to buy. This car is cheap enough
for me to buy.
3 The tea is too hot to drink. The tea is too hot for me to
drink.
4 This piece of music is too difficult to play. This piece
of music is too difficult for me to play.
5 This piece is easy enough to play. This piece is easy enough
for me to play.
Key to Multiple choice questions
1 d 2 d 3 b 4 a
5 b 6 a 7 b 8 d
9 b 10 b 11 d 12 c
Key to Sentence structure
All those who have contributed towards the gift will sign their
names in a large album which will be sent to the Headmaster's home.

祝同学学习进步~