They required that all the necessary documents ______ to the president's office before the end of this month.
A. be handed
B. must be handed
C. should hand in
D. had been handed in
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Ever since the family moved to the suburbs last year, they ______ better health.
A. could have enjoyed
B. had enjoyed
C. have been enjoying
D. are enjoying
From the Passage, we learn that the total population of Africa is approximately （）
A. seven hundred million
B. one hundred and twenty-five million
C. eight or eight point five thousand million
D. one hundred million
As a small boy, he was slow ______ learning to read and write.
A. on
B. with
C. about
D. in
John had been working hard and ______.
A. so had his brother
B. so his brother had
C. so was his brother
D. so his brother did
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