---He’s never been to an aquarium.---_______.
It ’s our duty to_________people_________too many trees.
—Mum, _________shall we have lunch? —We will have it when your dad_________.
This_________woman has devoted all her life_________caring for the poor.
John is much shorter than his sister, but he jumps_________she does.
—Do you like_________English teacher Miss Wang? —Yes, we like_________very much.