Friends advise her to stop doing the housework because her old age.

Choose the correct answer to complete the sentence. "These companies were accused of having released a ____ amount of carbon dioxide into the atmosphere."

All of the mammals, dolphins are undoubtedly among the friendly to human.

Hurry! We're got to leave the house immediately. Otherwise, __________ the opening ceremony. 

When a pearl is cut in half and examined under a microscope, but its layers can be seen.

A dancing is the oldest and liveliest of the arts.

Colleges in the newly formed United States, in recovering from the adverse effects of the American Revolution, inaugurated a broad curriculum in response of social demands.

Either humans and animals learn by experience, and what is learned influences the planning and carrying out of simple actions.

Choose the correct answer to complete the sentence. "Some scientists were _____ of having falsified the effects of climate change"

The most common form of treatment it is mass inoculation and chlorination of water sources

Our primary goal is to teach students to discover the truth. But we have also other aims, such as providing them with knowledge or to teach them to work consciously

Since the computer was invented, the work of accountants have been simplified.

Vitamin E, which is found in nutritious foods such as green vegetables and whole grains, action as an antioxidant in cell membranes.

Nocturnal creatures, raccoons forage primarily at night and spend their days rest in their dens

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

Being a nurse involves being cheerful, working unsocial hours, and come home with me smelling of disinfectant.

It is difficult to get used to sleep in a tent after having a soft comfortable bed to lie on.

Would you show me ................... shortest way to …………. airport 

Research has proved that a baby can distinguish its mother’s voice the moment he is born.

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. 

When I was a secretary, the boss often made me to stay in the office in the evenings.