________ 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
Bob, ___ these brochures among the tourists before you leave, will you?
#65936
A
having distributed
B
to distribute
C
distribute
D
distributing
Everything is full of yellow dust because of the sandstorm（沙尘暴）. ！
#66115
A
What terrible a weather
B
What terrible weather
C
How terrible a weather
D
What a terrible weather
_____ for the young man to spit in the subway!
#65984
A
How bad manners it is
B
How bad manners they are
C
What bad manners they are
D
What bad manners it is
_______over everything whenever we want to make a decision, many people believe, and we will have less chance of making mistakes.
#65967
A
Think
B
Thinking
C
To think
D
Thought