I got in his old truck and off ______ to one of the far corners of the farm to fix the fence. [ ]

The sentence structure（结构）of “Teachers ask me to finish the homework on time” is ____________.

It was in 1969 ______ two Americans went to the moon by spaceship.

You_____ to the meeting this afternoon if you have something important to do.

Mrs. Li was very angry ___ her son ___ his words.