You don't know her, _    ?

Many birds will, in the normal course of their migrations, flying more than three thousand miles to reach their winter homes.

If you ____ Mary by chance, please give her my phone number. 

........ Statue of Liberty was a gift of friendship from France to ............ United States.

Dwelling primarily in the ice Northern Polar seas, beluga whales are characteristically small, white, agile, and elusive.

There is nothing more annoying than you are interrupted when you are speaking

The workers are building a new bridge which is 150 meters in high.

Despite television is the dominant entertainment medium for United States households, Garrison Keillor’s Saturday night radio show of folk songs and stories is heard by millions of people.

Stars in our universe vary in temperature, colour, bright, size, and mass

No one is better at English than Lan, _    ?

Several comet are discovered each year, but very few of them are bright enough to be seen without the aid of magnification

If everyone _________, how would we control air traffic? Surely, we'd all be crashing into each other. 

The graphics ability of a computer depend on the speed of its processor and the size of its RAM

If people stop destroying animal's natural habitat, more species will survive and produce .......

The pleura that cover the exterior of the lungs and the inner walls of the chest cavity is a thin elastic membrane.

Tea did not become popular in Europe until the mid 17th century when it has been first imported to England and Holland.

Choose the correct answer to complete the sentence. "Having denied the responsibility for the _____ it caused, the factory was forced to close down"

From archeological evidences, we know that Egyptians were highly organized and civilized. Moreover, they were skillful in using crafts.

Listening to music on tape or even on disk is not nearly as good as to go to a live concert.

Choose the correct answer to complete the sentence. "Scientists predict that by 2030, the rainforest will have ______ smaller by 40%. "

One of the four underlined parts marked A, B, C, D in each sentence is not correct in standard English. Identify them: 

If the doctors find in the remedy, a lot of people would be saved.