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Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Susan couldn't help ____________ when I told her the joke.
A. laughing
B. laugh
C. to laugh
D. laughed
Susan couldn't help ____________ when I told her the joke.
A. laughing
B. laugh
C. to laugh
D. laughed
Can't help doing sth: không thể nhịn được việc gì đó
Can't help laughing: không thể nhịn cười
Can't help laughing: không thể nhịn cười
Đáp án A.