16. ----It’s getting dark, but Mr. Johnson is still at his office. ----No surprise. Who else can _____ he does?
–Did you manage to contact professor Li? --Well, yes, _________.
–You’re coughing badly, Martin. Why not give up smoking? --Give up smoking? Easier said than done, Amy. Once you _________ the habit of smoking, it is very had for you to _________.
It is said that the people of Shandong Province are the most __________in helping others.
Everything __________into consideration, the plan seems to be practical.
The school rules state that no child _____ out of the school, unless accompanied by an adult.