Last night there was .......... singing outside my house. 

While the sun is the major source of ultraviolet rays, it is not the source only

Patrick was very late getting home last night, and unfortunately, the dog barking woke everyone up

Tom didn’t believe in us, and it took along time to convince him.

Choose the correct answer to complete the sentence. "Climate change leads _____ numerous catastrophic consequences"

Because it is a healthy way to exercise, aerobic dancing is considered as an excellent method for release tension.

Without alphabetical order, dictionaries would be impossibility to use

Gothic Revival architecture has several basic characteristics that distinguish it from other nineteenth-century architectural styles

In the whole I agree with what you’re saving, but I’m not sure about your last point.

The company suffered substantial losses after the stock market crash and found it difficult for recovering.

Choose the correct answer to complete the sentence. "He was admired for _____ donated a lot of money to environmental protection campaigns"

Choose the correct answer to complete the sentence. "This process of cutting down trees is ______ ‘deforestation'"

After talking in Copenhagen yesterday, the secretary of state returning to Washington

Generally speaking, a magnitude 1.0 earthquake on the Richter scale is detected by instruments but not by person.

Each stanza of a poem has a repeatable pattern of meter and rhyme and is normally division from the following stanza by a blank line.

Dislike us , they are not very interested in sports and fitness activities.

“I doubt whether I can get through the test.” “If you did as I told you, you ____”. 

Once the scientist had figured out the precise path of the comet, he is finding that he was able to predict its next appearance.

Because helicopters are capable of hovering in midair, they are particularly useful for rescue missions, military operates, and transportation.

As soon as they arrived at the hotel they took the elevator to their room and straight to bed because they were so tired.

Bronze, after being heated by a strong flame, will change color, especially when exposure  to hydrogen .