__________ time is pressing, we senior three students should work extra hard and stick it out to the end.
Do you have any ideas ________ is actually going on in the classroom?
Elephants have their own way to tell the shape of an object and ________ it is rough or smooth.
I was surprised by her words, which made me recognize ________ silly mistakes I had made.
The poor young man is ready to accept ________ help he can get.
Mary wrote an article on ________ the team had failed to win the game.