his parents are hard on

his parents are hard on 英文改错 His parents are all working hard on the farm.急急急急急急急急. His parents are doctors.为什么谓语是are doctors 而不是are?为什么We study hard.的谓语却仅仅是study ,而不是study hard呢? This hard-working student has gone to Oxford University for f_____study .His parents are proud of him. they are his parents改成一般疑问句 These ____ (watch) are from his parents. they are his parents改成一般疑问句 His parents are quite _(worry).为什么? Are these his parents?改为肯定句 Those are his parents改同义句 Those are his parents.（单数） His parents are quite __(worry). Are these his parents?(改为肯定句) His parents are English 改为同义句 Sam is a hard working boy .He always gets a high score in the exam.So his parents are veryp------ of him. SOS急：初中英语改错1.How hard are they working!2.He likes go to school without eat anything.3.Mike must ask his parents the first. His parents are both teachers.和His parents both are teachers.哪句才对? His parents are always w_____ about his health.