-- Were you worried about him last night? -- Yes. It was ________.A.until he returned that I went to bedB.until be returned that l slept wellC.not until he returned that I went to bedD.not until did he return that I went to sleep
网友回答
C解析此处强调句型，强调是until从句，如复原应为I didn't go to bed until he returned.这个句型变为强调句型应注意，主句中的not在强调句中移至until之前。