问题
Dad, when shall we go to visit my grandpa?—Grandpa is very busy at present．We’ll go to see him whenever __________.
A:he is convenient
B:he will be convenient
C:it is convenient to him
D:it will be convenient to him
B:he will be convenient
C:it is convenient to him
D:it will be convenient to him
正确答案是：
同类题型
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