The world oceans have risen on average of 6 inches over past 100 years, which has been considered as an evidence global warming has an effect.

The first postage stamp, issued on May 6th 1860 in England, is was the Penny Black, which featured a profile of Victoria

Pigeons, many migratory birds, read the positions of the Sun and stars in order to orient them

Residen in some cities can call an electrical inspector to have the wiring in their house to be checked.

Harry lastly appeared in role of King Lear at the National Theatre.

Choose the letter A, B, C or D to complete the sentences.  " __________ you like to see their postcards collection?"

The world’s rain forests are being cut down at rate 3000 acres per hour.

Choose the letter A, B, C or D to complete the sentences. " I’d rather you _____________a noise last night; I couldn’t get to sleep"

Because of it consists only of relatively short strand of DNA protected by a shell of Protein, a virus cannot eat or reproduce by itself.

............ not to come late, the applicant set out for his job interview.

Since the Great Depression of 1930’s, social programs such Social Security have been built into the economy to help avert severity business declines

Choose the correct answer to complete the sentence. "______ disabled and non-disabled people can contribute to our community by doing voluntary work."

Choose the correct answer to each of the following questions. "They all eat, drink and do the same things _____ the sites of the world wonders."

The bell signaling the end of the first period rang loud, interrupting the professor’s close comments.

Students in the United States often support themselves by sitting, working in restaurants, or they drive taxi cabs

Our house has been redecorated last week. You can still smell paint when you enter and wallpaper has a striking contrast with the floor

Choose the best to complete the sentences: She was a very accomplished pianist. 

Afterwards I’d read the manual, I found I could us the computer easily.

Mark the letter A, B, C, or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Choose the letter A, B, C or D to complete the sentences. " If you don't keep silent, you ________wake them."

Choose the letter A, B, C or D to complete the sentences. "I decided ________ on a ecotourism tour this summer."