﹣I tried many ways to solve the problem, but of them worked.
﹣Never give up. You' ll surely make it.( )
A.allB.noneC.neither
Bob is one of _____ boys in Class1,Grade 9.( )
clever
cleverer
the most clever
the cleverest
﹣Jack didn't go to bed _____ 12o'clock last night.
﹣That's why he was late for school this morning.( )
until
for
to
at
The teenagers _____ to choose their own clothes.( )
allow
allowed
are allowing
should be allowed
______ exciting news it is!( )
What
What an
How
How an
﹣Must I hand in my homework now?
﹣_____( )
Yes,you need.
No,you mustn't.
Yes,you have.
No,you needn't.