The self﹣driving plane proves to be useful in many ways．___smart invention it is!（ ）
| A． |
What |
B． |
What a |
C． |
What an |
D． |
How |
This book_____be Lucy's． Look! Her name is on it．（ ）
A．canB．mayC．mustD．might
More and more people in Qingdao go to work_____subway now．（ ）
A．withB．onC．inD．by
It's my daughter's birthday today． She's_____years old．（ ）
A．eighteenB．eighteenth
C．the eighteenD．the eighteenth
Jack is happy． Ms． Wang， an excellent teacher， teaches_____math this term．（ ）
A．heB．himC．himselfD．his
We should have_____breakfast every day to keep healthy．（ ）
A．aB．anC．/D．the