25. The train leaves at 6:00 p.m., so I have to be at the station ____ 5:40 p.m. at the least.
The dooropen , no matter how hard she pushed.
Since nobody gave him any help, he have done the research on his own.
No onebe more generous; he has a heart of gold.
—Why are your eyes so red? You _______ have slept well last night. —Yeah, I stayed up late writing a report.
21. The children lost in the woods; otherwise, they would have been at the lakeside camp as scheduled.