31.-What are on show in the museum?-Some pictures ____ by middle-school students.
---I will take an exam next week and I am well-prepared. ---________.
~Now, where is my purse?_______! We'll be late for the picnic.
It is written clearly in the requirements that all passengers _______ check onto board thirty minutes before the plane takes off.
—We need to _______ a time to have a talk.—What about tomorrow? I'm too busy now.
During the two conferences, the journalists from the whole country _______ many problems the peasants were greatly concerned about.