He has a terrible toothache. So his mother has to __________ all his food for him.
| A．cut out |
| B．cut off |
| C．cut up |
| D．cut away |
—What were you doing when I rang you this morning?
—I was occupied ______ the housework and kept my son occupied______ his homework.
| A．at；doing | B．with；doing | C．at；to do | D．with；to do |
By serving others，a person focuses on someone other than himself or herself，______ can be very eyeopening and rewarding.
| A．who | B．which | C．what | D．that |
Mr.Morse，who graduated from a famous medical university，spent years ______ his skills as a doctor.
| A．adapting |
| B．acquiring |
| C．occupying |
| D．concentrating |
He’s _______as a “bellyacher” —he’s always complaining about something.
| A．who is known | B．whom is known |
| C．what is known | D．which is known |
They are only children of not more than twelve and don’t realize_______to organize such an exhibition.
| A．when they take | B．what it takes |
| C．how they take | D．what takes them |