Due to ever more spreading poaching, there _______ a dramatic decline in the number of elephants over the last decade. A. was B. is C. has been D. had been
C. => yếu tố OVER + THE LAST/ PAST + MÔC THỜI GIAN luôn dùng với HIỆN TẠI HOÀN THÀNH.
The boat was sailing north when a terrible storm _______. A. had broken B. broke C. would break D. was breaking
The packages _______ so that it would be easier to carry them. A. are tied in a bundle B. are tied altogether C. were tied in a knot D. were tied together
Only one of our gifted students _______ to participate in the final competition. A. has been chosen B. have been chosen C. were choosing D. chosen
If it _______ for the heavy storm, the accident would not have happened. A. isn’t B. hadn’t been C. were D. weren’t
“You’ll recognize Jenny when you see her. She _______ a red hat.” A. will wear B. will be wearing C. wears D. is wearing
It is blowing so hard. We _______ such a terrible storm. A. have never known B. have never been knowing C. never know D. had never known
If everyone _______, how would we control the traffic? A. could fly B. can fly C. flies D. had flown
Our industrial output _______ from $2 million in 2002 to $4 million this year. A. rises B. has risen C. was rising D. rose
Jane _______ law for four years now at Harvard. A. is studying B. has been studying C. studies D. studied
If she _______ sick, she would have gone out with me to the party. A. hadn’t been B. weren’t C. hasn’t been D. wasn’t
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