After we walked ______ the forest, and ______ a river, we arrived at that small village.
The woman stayed at home to _____ her very sick child.
The mayor is strongly opposed to _____ a new hall, which may cost a lot of money.
I can think of many cases, ________students obviously knew a lot of English words and expressions but couldn’t write a good essay.
Once you __ working with the professor, you will find he is not as tough as expected.
Not all of us can deal with the _____ of modern life.