________ you may not like to do chores， you should help your parents around the house．（ ）
A．IfB．AfterC．BecauseD．Although
Teenagers have to be 18 years old before they to drive a car．（ ）
A．are allowedB．will be allowed
C．allow
we work at English，the better grades we will get．（ ）
A．HarderB．The hardest
C．HardestD．The harder
Can I come today or tomorrow？
is OK．I'm busy today and tomorrow．（ ）
A．EitherB．NeitherC．EachD．None
Jenny is afraid to travel by plane．She always feels when getting on it．（ ）
A．nervousB．interestedC．relaxedD．happy
Jack's mother was so tired．She fell asleep she lay down on the bed．（ ）
A．untilB．as soon asC．unless