Question

I like sleeping with the window open ______ it’s too cold.

A．if

B．when

C．until

D．unless

Answer 1

D

試題分析：句意：如果天氣不是太冷我喜歡開著窗戶睡覺。A如果，引導(dǎo)條件狀語從句B當(dāng)，引導(dǎo)時(shí)間狀語從句。C直到……，D如果不。結(jié)合句意故選D。