– What’s the matter with you?
– My chest __________ when I breathe, doctor.
| A．injures | B．wounds | C．harms | D．hurts |
Do you have any ideas ________ is actually going on in the classroom?
| A．that | B．what | C．as | D．Which |
Elephants have their own way to tell the shape of an object and ________ it is rough or smooth.
| A．不填 | B．whether | C．how | D．Which |
I was surprised by her words, which made me recognize ________ silly mistakes I had made.
| A．what | B．that | C．how | D．which |
The poor young man is ready to accept ________ help he can get.
| A．whichever | B．however | C．whatever | D．whenever |
Mary wrote an article on ________ the team had failed to win the game.
| A．why | B．what | C．who | D．That |