----- Nội dung dịch tự động từ ảnh -----
20. If they ____________ dumping garbage into the river, more fish
A. will keep / die
B. won't keep / will die
C. keep / will die
D. keep / won't die

21. Mary decided to join the folk game ____________ she found it interesting.
A. and
B. so
C. but
D. because

22. We should save electricity, ____________ we shouldn’t waste water.
A. or
B. for
C. and
D. or

23. The road is slippery, ____________ you should drive carefully.
A. however
B. because
C. so
D. although

24. The police have sold the car in auction, ____________ no one came to take it.
A. but
B. so
C. or
D. for

25. Tony wants to go swimming, ____________ John wants to go to the cinema.
A. therefore
B. but
C. however
D. otherwise

26. I often sleep with the window open ____________ it's really cold.
A. unless
B. if
C. before
D. as

27. He said he couldn’t tell us about what happened; ____________ he lied.
A. instead
B. meanwhile
C. nevertheless
D. in addition

28. The boy is naughty; ____________ I love him.
A. so
B. however
C. because
D. consequently

29. Don’t drink too much water ____________ you are having a meal.
A. till
B. until
C. while
D. even though

30. She is going to the movies, ____________ she is going to the mall.
A. or
B. moreover
C. but
D. therefore