She /not/go /party /unless /her sister/go/her
A. She won't go to the party unless her sister goes with her.
B. She doesn't go to the party unless her sister goes with her.
C. She didn't go to the party unless her sister would go with her.
D. She isn't going to the party unless her sister is going with her.
Đáp án đúng: A
Dịch: Cô ấy sẽ không đi dự tiệc trừ khi em gái cô ấy đi với cô ấy.
We should move the furniture to higher places because of the flood.
Tom lives in the area affected by air pollution, so he has a breathing problem.