1. All kinds of techniques and medicines ______ to extend human beings life in recent years.
A. have developed
B. were developed
C. are being developed
2. A week after the interview, he received a letter ______ him the job.
B. to offer
3. Working part-time while ______ the same standard of living seems like everyone’s dream.
4. “Susan, I’d like to talk to you alone,” said the teacher, clearing the room ______ other people.
5. Attachments ______ to your Hotmail account can be downloaded to your personal computer by clicking them.
B. to send
D. are sent
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