According to a new regulation,a “green card” is________only to foreigners who live in China for 10 constant years.
It was not until Bob took off his dark glasses that I _____ him.
Buses here are always crowded with passengers, so I prefer _____ there rather than take a bus.
------- Where did you find him?-------It was in the hotel _____ he lived.
The scientist ______ much of his time to increasing the rice production.
The goods are of good _________.