1. My mother used to tell me stories_______________ I went to bed.
A.since             B.until             C.before
=> before: trước khi
2.You better take the keys_______________________ I’m not out.
A.in case          B.since          C.after
=> in case: trong trường hợp
3.My mother like eating fried chicken______________ it’s very bad for his health.
A.because         B.although         C.when
=> although: mặc dù
4.Yesterday, Jim was playing the piano_____________his sister was playing the flute
A.as            B.although          C.while
=> while: trong khi
5.You shouldn’t spend too much on computer_____________ it is harmful to your eyes.
A.as            B.when             C.although
=> as: vì
6.I will phone you ___________________ I get there.
A.while           B.as soon as          C.untill
=> as soon as: ngay sau khi
11. I didn't finish my work ______________ I was seriously ill yesterday 
A. when             B. though           C. since 
=>  since: vì 
12. James decided to save money from now ___________ he has enough money to travel this summer
A. so that       B. though         C. when 
=> so that: để
13. ____________ we have been friends for only one year, we deeply understand each other
A. if          B. though        C. once
=> Though: mặc dù

1. My mother used to tell me stories_______________ I went to bed.
A.since             B.until             C.before
=> before: trước khi
2.You better take the keys_______________________ I’m not out.
A.in case          B.since          C.after
=> in case: trong trường hợp
3.My mother like eating fried chicken______________ it’s very bad for his health.
A.because         B.although         C.when
=> although: mặc dù
4.Yesterday, Jim was playing the piano_____________his sister was playing the flute
A.as            B.although          C.while
=> while: trong khi
5.You shouldn’t spend too much on computer_____________ it is harmful to your eyes.
A.as            B.when             C.although
=> as: vì
6.I will phone you ___________________ I get there.
A.while           B.as soon as          C.untill
=> as soon as: ngay sau khi
11. I didn't finish my work ______________ I was seriously ill yesterday 
A. when             B. though           C. since 
=>  since: vì 
12. James decided to save money from now ___________ he has enough money to travel this summer
A. so that       B. though         C. when 
=> so that: để
13. ____________ we have been friends for only one year, we deeply understand each other
A. if          B. though        C. once