The janitor(火炉工), _______ in his regular work, _______ some steam immediately the pressure went up too high.
After going into the hall, the mother _____a friend and went over to greet him.
Choosing the right dictionary depends on ________you want to use it for. (2007江苏)
The difficulty we now meet with is ___________ we can persuade him to tell the truth.
It was really very dangerous; you ____ him seriously if I didn’t stop you.
—What do you think of the hotel here?—Oh, wonderful! We ____ a better one than this.