15 Bài tập Trắc nghiệm Unit 6 Vocabulary and Grammar
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She swam strongly and ...... cross the river easily, even though it was swollen

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She swam strongly and ...... cross the river easily, even though it was swollen by the heavy rain. 

used to

was able to

could

was supposed to

Giải thích

Đáp án: B

Giải thích: Cô bơi mạnh mẽ và có thể qua sông dễ dàng, mặc dù nó bị sưng do mưa lớn.