1/ there/ fridge/ next/ door
a. There is a fridge next the door.
b. There is a fridge next to the door.
c. There are a fridge next to door.
d. There is a fridges next to the door
Phân tích: next phải đi với to(loại A)
                 a fridge phải đi với is(loại C)
                 a fridge là số ít, fridges không có s(loại D)
=> CHỌN B
2/ Children/ ought/spend/ free time/play sports
a. Children ought spend their free time playing sports.
b. Children ought to spend their free time play sports.
c. Children ought spent their free time play sports.
d. Children ought to spend their free time playing sports.
Phân tích: Ta có công thức ought to do something
=> CHỌN D