--- Jack fell off the ladder yesterday, but he is all right now?
---What a lucky dog! He _________ himself badly.
A. should injure B. might injure C. should have injured D. could have injured
Catherine, ____ the alarm clock for 6 o’clock, or you would oversleep and be late for the train.
A. setting B. sets C. set D. to set
The results of the examination ________ that you have all made great progress.
A. shows B. show C. showed D. has shown
--- Is your brother going to Jack’s birthday party tonight?
---I am not sure. He __________ go to a concert with his girlfriend instead.
A. might B. has to C. ought to D. must
It took a long time for the effective use of natural gas_________．
A. to be made B. to make C. being made D. making
At the beginning of the 20th century, many people thought that the family was falling apart--- _______, they thought it was dying.
A. on the other hand B. for another
C. in other words D. in addition
