问题
_________is very interesting to swim in the river in summer,but it’s dangerous.
A:a, a
B:the, the
C:a, the
D:an, the;
B:the, the
C:a, the
D:an, the;
正确答案是：
同类题型
Dad，there is a snake at the gate crawling this way.-Don’t ________，boys；there’s no danger.[ ]
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She ________ for five years and she has a son now.
Sometimes smiles ______ be false, hiding otherfeelings like anger, fear or worry.
Work harder, _______ you will get more grades in the coming exam.