26. After a concert tour in Asia, Canada and the U.S., he will _____ work on a five-language opera.
A.confine
B.indulge
C.resume
D.undergo
27. After briefly ____ the history of the author, Prof. Li turned to the novel itself immediately.
A.dipping in
B.dipping at
C.dipping into
D.dipping to
28. After negotiation, the two countries ____ the terms of peace.
A.agreed with
B.agreed in
C.agreed to
D.agreed on
29. After performing a successful operation, the doctor at last pulled the patient ____.
A.back
B.in
C.up
D.through
30. After reading these books, he was _____ to the Darwinian theory of evolution.
A.changed
B.converted
C.transferred
D.adjusted