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CONTA
5. Historians (A) said the (B) maple leaf become (C) a symbol of Canada as early as (D) the 1700s.
6. Yesterday evening I did (A) all my (B) homework, but my sister didn't did (C) hers (D).
7. Kiwis are not (A) a piece (B) of fruit but an (C) unique bird found only in (D) New Zealand.
8. Driving in (A) night is especially dangerous (B) and drivers should (C) even be more careful
(D).
9. When you look (A) at their (B) new energy system, our (C) seems very old-fashioned (D) by
contrast.
10. Biomass was (A) largest (B) source of annual U.S (C), energy consumption until the (D) mid-
1800s.