—Your sitting room looks so clean and tidy.—Well, thanks to the baby­sitter. She is a real ________.

The doctor suggested he_______with a serious disease and that he______to hospital at once.

 Not I but Tom _______ the car accident.

It takes ______ to talk to others on the team when that might expose some of your own weaknesses or ignorance.

 In order to keep fit, people eat ________ vegetables per person today as they did two years ago.