(2013·河北普通高中高三质量预测)—What courses are you going to learn next term?—I don't know.But it's about time ________ on something.
#1008
A
I'd decide
B
I decided
C
I decide
D
I'm deciding
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—We have booked a room for today and tomorrow. —______, sir. 
#4130
A
I’m sure
B
My pleasure
C
It’s all right
D
I’ll check
—If you don’t hurry, I’ll go without you.—_____ I’m nearly ready. 
#2483
A
I don’t get it.
B
Get a move on.
C
That’s a good point.
D
Hang on a minute.
—Mind if I sit here?— _________.
#3480
A
Suit yourself
B
Behave yourself
C
Never mind
D
Help yourself