78. --- You repay this debt this week according to the agreement.
--- Don’t worry. I pay it off before the deadline.
A. must; will
B. shall; must
C. should; am due to
D. shall; am bound to
网友回答
A. must; will
B. shall; must
C. should; am due to
D. shall; am bound to
解析：可联系答.案.网客服索取。