A.was | B.am coming | C.came | D.have come |
A.is increasing | B.has increased |
C.are increasing | D.have increased |
A.had been; now | B.has been; then |
C.had been; then | D.was; now |
A.is based on | B.based on |
C.are based on | D.basing on |
A.was looking after | B.would look after |
C.had looked after | D.look after |
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