________ she has invented for us!
A. What useful invention
B. How a useful invention
C. What a useful invention
---_________ will the dinner be ready? I'm so hungry.
--- In three minutes.
A. How long B. How soon C. How much
Cindy could hardly speak English three years ago, ________?
A. couldn't she? B. could she C. can she
My father told me that he________ back to Hawaii two days later.
A. would go B. will go C. would return
--Will you please give the dictionary to Lily?
---Sure. I'll give it to her ________ she arrives here.
A. until B. as soon as C. before
Your secret letter must ________ in a safe place.
A. be kept B. kept C. is kept
