问题
选择题
Last Sunday my father made a promise ______ he was free he would take me to the park.[ ]
A. if
B. that if
C. whether
D. that
答案
答案：B
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Last Sunday my father made a promise ______ he was free he would take me to the park.[ ]
A. if
B. that if
C. whether
D. that
答案：B