The boy is ________for his age. —Yes, I was much _______when I was his age.

_____all the students in our class, Xiao Ming writes _____. [ ]

“Do you have any questions ________ clear to you?” the teacher asked.

Our teacher told us that light _____ much faster than sound.

The lady _________ dancing as a hobby in her sixties, and she is really good at it now.