The Hubble Space Telescope will search for planets around the stars, a key to the ...... extraterrestrial life, and examine interstellar dust and gases out of which stars are born.

My father ...... down for a nap.

Walking at 3'o clock, I heard the ...... of thunder.

Rohan and Rohit are twin brothers, but they do not look ......

The earth is at present in great danger of becoming uninhabitable because of ...... environmental pollution which is goi…

You've only three months to complete the course, Don't give ...... now.

The more your action and thought are allied and ...... the happier you grow.

What is the ...... for an air letter?

Ayesha always ...... the permission of her father before going for movies.