________ if you want to do something, or you won’t be able to do it well.
#66250
A
To try your best
B
Trying you best
C
Try your best
D
Unless you try your best
推荐题目
_________ it is to have a picnic ! 
#66058
A
What a fun
B
How fun
C
What fun
D
How a fun
__it is for us to see that he does his work so well! 
#66279
A
What surprise
B
How surprise
C
What a surprise
D
How a surprise
The little boy came riding full speed down the motorway on his bicycle. ____ it was!
#65981
A
What a dangerous scene
B
What dangerous a scene
C
How a dangerous scene
D
How dangerous the scene
You can see a large signal on the wall:____! 
#66276
A
Long lives the PRC
B
Long live the PRC
C
Long does the PRC live
D
Long do the PRC live