She ______ a presentation tomorrow, and she’s really nervous about it! A) gives B) is giving C) is going to give
B) is giving -- the action is planned and arranged
They ______ a new house when they save enough money. A) buy B) are buying C) are going to buy
C) are going to buy -- to express a future plan or intention
The train ______ at 7:00 a.m. It’s always at 8:00 a.m. A) doesn’t leave B) isn’t leaving C) isn’t going to leave
A) doesn’t leave -- for scheduled events like train timetables