.Having checked the doors were closed, and _____all the lights were off, the boy opened the door to his bedroom.
It was _______ he does _______ makes his students enthusiastic about school. (原创)
The number of people who speak English ______ large, and a large number of people _______ native speakers.
Only when he failed the exam ________ that he didn’t work hard. (原创)
I knew he failed in the final exam the moment I _______ him crying alone in the classroom.(原创)
If _______, I bet, Milinski will burst into tears.