as for至于 balance ones diet平衡饮食 plenty of大量 of course当然 take care of照顾 catch a cold患感冒 have a headache头痛 be a little有点 at this moment此时 at home在家 how long still还要多久 come back回来 think about考虑 decide to决定 once a week一周一次 the same as与…一样 hardly几乎不 nervous紧张的 see a dentist看牙医 what do you usually do on weekends你周末通常干什么? he surfs the internet twice a week他一周上网两次。 how often do you do sports你多久做一次运动? I am have a cold我感冒了。 you need to see the doctor.你应该看医生。