I fell in love with the West Lake ____ I went to Hangzhou.
It was the first time that I _______ visitors since I’d moved to London.
Now that their parents are dead, the poor boy doesn’t know ________ the money they left.
Look! Xiao Wang is too sleepy to work . He ____ up watching TV .
When somewhat better ________ academically, he returned home to continue his research.
_ properly, a car can be used for many years.