—Mr. Johnson, I’m really sorry ________ you waiting for so long a time.
—I know you are very busy at the moment.
A.to have kept B.to keep
C.to be keeping D.to have been kept
When first coming to the city, my parents often had a chat with neighbors, just as they _____ in the countryside.
A.will do B.had done C.have done D.were doing
Five workers ____ the mine disaster. After the injured ___ to the hospital, doctors and nurses immediately got down to saving their lives.
A.was survived; rushed
B.survived from; were rushed
C.survived; was rushed
D.survived; were rushed
The science competition is a good opportunity to show students _____ creativity can add new value to their school life.
A.where B.whether C.how D.when
The exchange student from Kenya often shares with us the news of his country and ____of his neighbouring countries.
A. those B. that C. it D. the one
_____ his conclusion on the evidence he collected on the spot, he proved that the murderer was guilty.
A.Based B.Basing C.To base D.Being based
