21. The day ________ I shall never forget is the one _________ I joined the army.
(A)that / where
(B)which / when
(C)when / in which
(D)on which / why
答案:登入後查看
統計: A(39), B(350), C(91), D(46), E(0) #537082
統計: A(39), B(350), C(91), D(46), E(0) #537082