用适当的时态填空。
用正确的时态填空，完成练习后再对照课文核对你的答案。
Give the correct form of the verbs in parentheses. Do not refer to the passage until you finish the exercise.
用正确的时态填空，完成练习后再对照课文核对你的答案。
Give the correct form of the verbs in parentheses. Do not refer to the passage until you have finished the exercise.
用正确的时态填空，完成练习后再对照课文核对你的答案。
Give the correct form of all the verbs in parentheses. Do not refer to the passage until you finish the exercise.
用正确的时态填空，完成练习后再对照课文核对你的答案。
B Give the correct form of the verbs in parentheses. Do not refer to the passage until you have finished the exercise.
用正确的时态填空，完成练习后再对照课文核对你的答案。
B Give the correct form of all the verbs in parentheses. Do not refer to the passage until you finish the exercise.
用正确的时态填空，完成练习后再对照课文核对你的答案。
B Give the correct form of all the verbs in parentheses. Do not refer to the passage until you finish the exercise.
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