Doctors and scientists _________ recently the benefit of fish in the diet. A. have shown B. will show C. are showing D. have been showing
A. have shown
Alex _________ out because the door is locked outside. A. can be B. must be C. can't be D. mustn't be
B. must be
Children should be _________ to realize their full potential. A. encouraging B. discouraging C. encouraged D. discouraged
C. encouraged