I have two grammars, ______are of great use. 
#73806
A
all of which
B
either of which
C
both of that
D
both of which
推荐题目
We’ll go to the park if it ________.
#41361
A
won’t rain
B
don’t rain
C
doesn’t rain
D
not rain
Every evening after dinner, if not ______ in reading books, she can be found _____ on the sofa watching TV.
#68206
A
absorbed; seating
B
absorbing; sat
C
absorbed; seated
D
absorbing; sitting
—Well, I do think the iPod is a smart, convenient and intelligent. —________.
#73739
A
So it is
B
So is it
C
So does it
D
So it does