As there is less and less coal and oil, scientists are exploring new ways of making use of ______ energy, such as sunlight, wind and water for power and fuel.
A.primary | B.alternative | C.instant | D.unique |
______ for two days, Steve managed to finish his report on schedule.
A.To work | B.Worked |
C.To be working | D.Having worked |
I ______ have worried before I came to the new school, for my classmates here are very friendly to me.
A.mightn’t | B.mustn’t |
C.needn’t | D.couldn’t |
Jane can’t attend the meeting at 3 o’clock this afternoon because she ______ a class at that time.
A.will teach | B.would teach |
C.has taught | D.will be teaching |
______in painting, John didn’t notice evening approaching.
A.To absorb | B.To be absorbed |
C.Absorbed | D.Absorbing |
-Jack, you seem excited.
-? I won the first prize in the English speech contest.
A. | Guess what | B. | So what |
C. | Pardon me | D. | Who cares |