When you are in your school dining hall during lunchtime， you may not feel lonely _______ you can find someone to have lunch with．（ ）
A．ifB．unlessC．afterD．because
Jerry will succeed in working out the problem ____ he gives up．（ ）
A．IfB．becauseC．soD．unless
________ you may not like to do chores， you should help your parents around the house．（ ）
A．IfB．AfterC．BecauseD．Although
I really want to pass the exam for further study．
Believe in yourself， dear! Your dream will came true you put your heart into it．（ ）
A．even ifB．as long asC．as soon as
It is said that children in South Korea have to hike and walk through mountains at night_____their military（军事的） training．
Really？ So their training is much harder than ours．（ ）
A．afterB．sinceC．duringD．before
What a mess! The sharing bikes are thrown everywhere．
Let's collect and put them in the right place_____they can be used conveniently．（ ）
A．unlessB．so thatC．becauseD．so long as
What do you think of your junior high school life？
I think it is enjoyable， ___ I sometimes have some trouble in study．（ ）
A．ifB．thoughC．whileD．until
I couldn't believe the take away man can remember so many classical poems _____I saw him on TV．（ ）
A．sinceB．untilC．ifD．when
Hawking is no longer with us， he will continue to inspire the world．（ ）
A．soB．ifC．butD．as
Work hard， _______ you'll have a big success．（ ）
A．orB．butC．andD．yet
The manager of the hotel was waiting at the gate _______ the guests arrived．（ ）
A．whileB．whenC．unlessD．after
He stayed up very late that night． __________ he woke up in the morning， the sun was already high up in the sky．（ ）
A．UntilB．AfterC．WhileD．As
Good news! China won a gold at PyeongChang Winter Olympic Games．
______，we won six silvers．（ ）
A．MoreoverB．HoweverC．InsteadD．Otherwise
Be patient! Give him more time，______ he will find the answer to the question on his own．（ ）
A．butB．orC．andD．so
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