climb the tree! It’s too small. Come down quickly!
#59411
A
Don’t
B
Isn’t
C
Aren’t
D
Do
推荐题目
_____ hard and you’ll succeed sooner or later.
#59339
A
Study
B
To study
C
Studying
D
Studied
_____ through this book and tell me what you think of it. 
#66199
A
Look
B
Looking
C
To look
D
Having looked
____ it is to collect stamps!
#66265
A
What a great fun
B
What great fun
C
How great a fun
D
How a great fun
--- Don’t take pictures here, please. --- ______
#59446
A
No way
B
Sorry, I won’t
C
Here you are
D
It’s a pleasure