I knew he failed in the final exam the moment I _______ him crying alone in the classroom.(原创)

Only when he failed the exam ________ that he didn’t work hard. (原创)

The number of people who speak English ______ large, and a large number of people _______ native speakers.

 It was _______ he does _______ makes his students enthusiastic about school. (原创)

We’ll discuss the problem ________ lunch time.

We don’t have to ________ every word that we don’t know when reading.

Mary has______ speaking dialects, so it is not surprising to see her communicate with the

people from different parts of this country easily.

_____ by a black hole, Li Yanping was so frightened at first, but he calmed down later and

tried his best to escape.

 The gravity on the earth is much ______ that on the moon, do you know why?

---Is there any present for me ?

---Of course .This necklace __you .