— I have ______ in learning chemistry. Could you help me with it?— Sure, I’d love to.
— I am afraid that a ghost is behind the tree! —______! There is no ghost in the world.
.We stopped ______, but heard nothing from the room.
Theretwo wonderful basketball matches this weekend.
---Is the ball under________desk? ---No,it’s under_________.
Why______the modern city with us?