The explorer insisted ________ his advice was of ________.
A. on, value B. that, value
C. on, valuable D. that, valuable
The explorer insisted ________ his advice was of ________.
A. on, value B. that, value
C. on, valuable D. that, valuable
B
【解析】
试题分析：句意: 探索者坚持认为他的建议很有价值。insist on后跟v-ing形式作宾语；insist that后跟宾语从句，空后有系表结构，故第一空只能选that。be of value=valuable很有价值。根据题意选B。
考点：考查宾语从句引导词和介词短语。