You should respect the opinion of others, and at the same time you should insist uponright.
A. that you believe is
B. which you believe to be
C. what you believe is
D. what you believe
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The question remains we should accept their invitation.
A. whether
B. that
C. if
D. why
Free movie tickets will be sent tocome first.
A. whoever
B. whomever
C. whom
D. who
She is in doubtshe accepts your advice.
A. if
B. that
C. of which
D. whether
1、专门的关系运算包括_______、________、_________和_________。