问题

Not until I was a senior student the importance of English[ ]
A: I have realized
B: did I realize
C: have I realized
D: I realized
B: did I realize
C: have I realized
D: I realized
正确答案是:
同类题型
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—I wonder __________. ––Zebras.
Why not have a new machine designed—__________ I’ll have someone do it soon
She ought to stop reading; she has a headache because she ________ too long.
The old man has____useful horse and horsecan do a lot of things for him.