They should make decisions _____ whether the students need more help.

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问题 They should make decisions _____ whether the students need more help.

选项 A、in case
B、as to
C、concerning
D、considering

答案B

解析 考查连词的用法。as to意为“有关,关于”,尤用于争论和做出决定时,后面常接wh一分句。in case意为“如果,以防”,后接that从句(that可省略)时谓语动词常用虚拟语气;concerning“关于”是介词,后面往往接名词;considering也是介词,后常跟名词,也可跟that或wh-分句,意为“考虑到,就……而论”,放在本题不合句意。
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