Chọn đáp án đúng và giải thích:
1 She couldn't reach the phone because she___ a bath
A, had. B, had been having C, was having. D, is having
2, The thing I hate most about ____ is the boredom
A, employ. B, unemployed. C, employment. D, being unemployed
3, It is 10 p.m, she ___ for nearly four hours
A, is studying. B, was studying. C, studies. D, has been studying
Nhớ kèm lời giải thích giúp mình nhé