Question

It was______ she went back home______ Kate realised she had left her schoolbag at school.

A．when; then

B．not; until

C．only; when

D．not until; that

Answer 1

D

试题分析：句意：直到她回到家。凯特才意识到她把落在学校里了。until在强调句式中要把not放在until之前；在强调句式中除了强调人可以用who外，其他的情况一律用It is /was...that...。故选D。
考点: 考查not until的强调句式的用法。