17. When did they built this house?
II- Read the following passage and choose A, B, C, or D to fill in the gaps:
A. When this house was built/ B. When is this house built?
The leading causes of (41) in many developing countries are now heart disease, cancer,
C. When did this house build? D. When was this house built?
accident, flu, pneumonia etc. Moreover cigarettes, alcohol, physical inactivity and
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