题目内容
13.Whenever we are in ____ trouble, we should never lose______heart.
| A.a; the | B.a; a | C./; / | D./; the |
C
解析
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题目内容
13.Whenever we are in ____ trouble, we should never lose______heart.
| A.a; the | B.a; a | C./; / | D./; the |
C
解析