38、______ the maths problem is difficult, I’ll try very hard to work it out.虽然这道数学题很难，我会尽力将它做出来的。 A. Though B. When C. Before D. After

38、______ the maths problem is difficult, I’ll try very hard to work it out.虽然这道数学题很难，我会尽力将它做出来的。
A. Though
B. When
C. Before
D. After

出自：东华大学大学英语4

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