1.关键句型练习答案
C 1 should (or ought to) come
2 had to do
3 should (or ought to) have come
4 should (or ought to) have asked
5 had to explain
2.难点练习答案
1 accepted…off 2 dress up…down
3.多项选择题答案
1 a 2d 3b 4b 5c 6a
7 a 8 d 9 c 10 c 11b 12 d
我们还没上到那,这些是参考书上的,只有这么多.