问题补充:
Li Lei has not yet answered my questionI can go with him tohe calls the Natural Underground Gallery next week.
A. that; which
B. whether; what
C. whether; that
D. that; where
答案:
A. that; which
(答案→)B. whether; what
C. whether; that
D. that; where
解析:可联系答.案.网客服索取。