31. A warm thought suddenly came to me _
问题:
31. A warm thought suddenly came to me _______ I might use the pocket money to buy some flowers for my mother’s birthday.
A.if
B.when
C.that
D.which
31. A warm thought suddenly came to me _______ I might use the pocket money to buy some flowers for my mother’s birthday.
A.if
B.when
C.that
D.which