【正文】
id D . is 【解析】 過去時(shí)態(tài)中可由助動(dòng)詞 did 替代問句中實(shí)義動(dòng)詞 cle ane d 。 wi th B . on。 w ith D . in。 6 . ( 大多數(shù) ) studen ts l ike d o ing som e reading i n the mor ning. 7 . The new mov ie i s so ( 精彩的 ). I love it . 8 . She got a ra dio from her grand pa, but she can39。s b uy some. M o s t w o n d e r fu l a n y w h e r e fe w 1 0 . Nin a did n 39。 1 1 . My parent s (be) at hom e yesterday . 1 2 . I (help ) Helen find he r l ost dog last week end. 1 3 . Nothing ( be) diffi cult, if you wor k on it. w e r e h e lp e d is 1 4 . Tom (stay ) at ho me an d (study) for the E ng