She is upset today, and I want to do I can to cheer her up.A．whichever B．however
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She is upset today, and I want to do I can to cheer her up.
| A．whichever | B．however |
| C．whatever | D．whenever |
试题答案
C
解析试题分析:句意：她今天有点沮丧，我想尽力去让她高兴起来。A无论哪个；B无论如何；C无论什么；D无论何时。此处是个宾语从句，从句中省略了动词do，而句中缺少宾语从句中的宾语，排除B、D选项；而whichever需要有选择范围，故答案选C。
考点：考查宾语从句。