We must speak English __________ in order to improve our oral English.
Mary's pale face is a _____ that she _____ rather weak after the operation.
It was _____ that I found my diamond necklace.
–I've passed the driving test! –I'm glad to hear that you _____ it at last!
Why didn't you make me a telephone call yesterday? I _____ about it.
–Do you know what Mike does all day? –I know he spends at least as much time watching TV as he _____ his lessons.