【正文】
You must do as I tell you oh,I must,_____? A should I B ought I C mustn39。t I D must I 18 ____,I think, and the problems could be settled A If you double your effort B So long as you keep up with your sports C Making greater efforts D A bit more efforts 19 The boys are not doing a good job at all, are they? ________ A I guess not so B I don39。t so C I don39。t guess so D I guess not 20 Waiter! ______? A Yes,sir B What C All right D Pardon] 答案: 15 CDCDC 610 DDBCC 1115 DBDAD 1620 CDDDA