阿摩線上測驗
21. One species of Australian frog lays up to 25 eggs at a time and _____ for protection.
(A)swallows they
(B) swallow they
(C) swallow them
(D) swallows them
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統計： A(16), B(23), C(113), D(632), E(0) #1928936
統計： A(16), B(23), C(113), D(632), E(0) #1928936
