问题：
— _ you the cat?
—Yes, I have.
—When _ you _ it?
—Ten minutes ago.
[ ]
A. Did, feed; did, feed
B. Have, fed; have, fed
C. Did, feed; have, fed
D. Have, fed; did, feed
— _ you the cat?
—Yes, I have.
—When _ you _ it?
—Ten minutes ago.
B. Have, fed; have, fed
C. Did, feed; have, fed
D. Have, fed; did, feed
—Yes, I have.
—When _ you _ it?
—Ten minutes ago.
[ ]
A. Did, feed; did, feed B. Have, fed; have, fed
C. Did, feed; have, fed
D. Have, fed; did, feed
参考答案：