He made another wonderful discovery, ______ of great importance to science.
A. which I think is B. which I think it is
C. which I think D.I think which is
Was it because of the heavy snowstorm in Europe _______ the flight had to be put off ?
A. which B．so C．why D．that
Not until the taxi disappeared in the distance her handbag was gone.
A．Tina had found B．had Tina found C．did Tina find D．Tina found
It is one thing to enjoy listening to good music, but it is another to play it well yourself.
A. quite B. very C. rather D. much
Tsinghua University, in 1911, is home to a great number of outstanding figures.
A. found B. founding C. founded D. to be founded
He had a burning ________ to win back the teacher’ s confidence in him.
A．desire B．feeling C．emotion D．impression
