Madame Curie is believed _______ radium.
A. discovering B. having discovered C. to have discovered D. to discover
Having taken our seats, _______.
A. the professor began the lecture
B. the lecture began in no time
C. we were attracted by the lecture immediately
D. the bell announced the beginning of the lecture
Apart from being good at teamwork, he is tall, strong and athletic. _______, he is the best choice for the coming basketball match.
A. All in all B. In addition C. After all D. By the way
While visiting the robot exhibition, the professor kept nodding his head to express his _______ with his students’ work.
A. description B. congratulation C. ambition D. satisfaction
Who was it _______ wanted to see me just now?
A. whom B. that C. when D. which
Do you think the reason _______ he gave is believable?
A. which B. why C. what D. to which
