________ blood if you can and many lives will be saved.
#65912
A
Giving
B
Give
C
Given
D
To give
推荐题目
Your sister is sleeping. Don’t ___________.
#59352
A
be quiet
B
is noisy
C
be noisy
D
being quiet
_____wild animals when you go up the hill.  
#66144
A
Look out for
B
Take care
C
Take care of
D
Be careful
The teacher often says, “ _____ late for class.”
#59341
A
Don’t
B
Don’t be
C
Not be
D
Doesn’t
 ________ at the door before you enter my room, please.
#66075
A
Knock
B
Knocking
C
Knocked
D
To knock