He transplanted the young tree to the park ____ it was the best time for it .
----- “Where is Mother.” ------ “She is still in the kitchen. She _______ the housework all morning.”
In the late afternoon, it is cold that our water bottles froze.
I’d like to go straight to help people, ________ when they are in trouble.
My plane _________ at 8:30 am, so I _________ home early tomorrow morning.
Sorry, sir. I broke the window glass, but I didn’t do that ______.