This________boy is John’s nephew.

Most environmental problems exist because adequate measures for preventing them________taken in the past.

It is easy to think you understand another person, ________later that you were wrong.

There is a real possibility that these animals could be frightened, ________a sudden loud noise.

This organization brought Western artists together in the hope of making more of an impact on the art community ________any of them could individually and to promote Western art by women.

Living in the desert involves a lot of problems, ________water shortage is the worst.

A group of soldiers marched forward, ________.

________in the past, at the moment it is a favorite choice for wedding gown.

The reason why his property was confiscated by the country, it________, was that he was involved in a lot of fraudulent activities during the war.

My reading in later life has supplied me with some possible explanations of his________.

In the past, most foresters have been men, but today, the number of women________this field is climbing.

People who live in small towns often seem more friendly than those living in________populated areas.

We must work hard to________the advanced technological level.

The relationship between dream life and waking life has been studied________.

Though________rich, she was better off than at any other period in her life.

Of course, most immigrants did not get rich overnight, but the________of them were eventually able to improve upon their former standard of living.

They abused their power and bullied the people, thus arousing________discontent among the masses.

Care should be taken to decrease the length of time that one is________loud continuous noise.

If a couple are divorced and their child lives with his mother, he is said to suffer from lack of________love.

Which of the following sentences has an appositive clause (同位语从句)?

Before starting on a sea voyage, prudent navigators learn the sea charts, ________and memorize lighthouse locations to prepare themselves for any conditions they might encounter.

The president of the college, together with the deans, ________planning a conference for the purpose of laying down a series of regulations.

If the United States had built more homes for poor people in 1995, the housing problems now in some parts of the country________so serious.

He appreciated________the chance to deliver his thesis in the annual symposium on Comparative Literature.

The board deemed it’s urgent that these invitations________tomorrow morning.

—________all three people in the car injured in the accident? —No, ________only the two passengers who got hurt.

Great efforts to increase wheat production must be made if bread shortages________avoided.

________is the center of our planetary system was considered as heresy by the church in the Middle Ages.

Your mother dislikes seeing you with me, ________?

According to the psychoanalyst Sigmund Freud, wisdom comes from the________of maturity.