This book_________ be Jim's. His name is on it.（ ）
| A． |
must |
B． |
might |
C． |
can't |
D． |
mustn't |
﹣How ! There are no workers in the bank．
﹣It's the first self﹣service bank in China．（ ）
A．strangeB．scaryC．boring
Blue whales are ． We should try to protect them．（ ）
A．in timeB．in publicC．in danger
﹣ does Liu Chuanjian do？
﹣He's a pilot of Sichuan Airlines． He's a hero!（ ）
A．WhatB．WhereC．When
﹣I tried many ways to solve the problem， but of them worked．
﹣Never give up． You' ll surely make it．（ ）
A．allB．noneC．neither
Tony is the best student in the class because he works than the others．（ ）
A．hardB．harderC．hardest