Without my glasses, I couldn’t ______ whether that figure on the blackboard was a three or an eight.
---What is our earth like ________from the moon? ---Well, our earth, with water ________ 70% of its surface, appears as a "blue ball".
I’d rather have a room of my own, however small it is, thana room with others.
It was raining heavily. Little Mary felt cold, so she stood_____ to her mother.
The teacher couldn’t make himselfattention to because the students were so noisy.
My father served in the army in when he was in .