31. Attention must be paid to ______ science and technology..
You may rely on _______ that she is sure to attend the concert.
Tom often gets high marks. He is one of the students who _______ great importance to _______ homework
Everybody at the scene was shocked when the fierce shark _______.
--- Tony, may I borrow your car this afternoon?--- Sorry. _______.
_______ seems that most endangered species of wildlife are under protection.