It has been announced that all the students _____ put on masks before going to school in case they are infected with the terrible virus.A shall B will C need D should
27. He is above ______ in his lessons. That's the results of his hard work.
28. Do you happen to know the proverb, “Shoot two ____ with one arrow”?
29. On March 12, the students were planting trees ____ the classroom.
30. Once Jerry is back of you, there will be nothing halfway. The underlined part probably means _____.
31. Don't throw out the _____ with the bath water.(prov.)