A lot of money __________ at the charity show, but the cost of living __________ a lot, so we still need to do much work to help the disabled people.
There is ____ “f” and ___ “d” in the word “friend”.
_______your father and mother both teachers?
______ is your father ? ---He’s a driver.
________ climb the mountains(山).
—Where’s Mary? —She’s ________ the classroom.