A.realized | B.spotted | C.combined | D.observed |
A.was happened | B.were happened | C.happened | D.happens |
A.think; are | B.am thinking; are | C.thought; were | D.think; were |
A.would serve | B.was serving | C.had served | D.served |
A.aimed | B.pointed | C.guided | D.imitated |
A.struggled | B.caught | C.trapped | D.placed |
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