--Hi, Tracy, you look tired.
--I am tired. I _________ the living room all day.
A. painted B. had painted
C. have been painting D. have painted
Money spent on the brain is never spent ______.
A．in ease B．in anger C．in vain D．in comfort
He managed to make himself _____ at the meeting yesterday.
A. understanding B. to understood
C. understood D. to be understood.
Though________up in a big city，Bill always prefers to live a country life.
A．brought B．was brought
C．bringing D．having brought
Compared with the price of that store，the price of this one sounds________—all the goods are good value.
A．considerable B．reasonable
C．available D．sensible
Although metals ________widely in qualities such as strength and hardness，they all have certain qualities in________.
A．vary；general B．differ；common
C．react；particular D．refer；detail
