you should have at _ seven hours of sleep a day.

you should have at _ seven hours of sleep a day. You should have known me at that You should work hard at school改成同义句：You _ _ _work hard at school _ have you got a digitai camera _you should buy _ _ you have a party last _ Yes.I sang a song at the -. what should you have? “You should not have. You shouldn't stay at home all day.You should take part in outdoor activities 同义句You should takeyou should take part in outdoor activities _ _ staying at home all day. l have a fever .——_ you should drink lots of water. If you have a c____,you should see a doctor at once. if you have a new idea ,you should e___ at once十万火急 I sang a song at the____._ you have a party last _ _?Yes.I sang a song at the -. You should at least tell the reason ___ what you have done.A of B with C for D at He should have been at boarding school should have been You have failed in the test again .You ( ) hard at your subject .A should have studied B must have studied C may have studied D need have studied Linda ,you should have greeted us at the door.语法对吗 Remember we have _ (record) what you said at the meeting.说明原因, what do you usually do on Children's day?We _ have parties at school.厂