They are ugly and expensive, _______ people buy them.

Some conifers, that are tree that have cones, are able to thrive on poor, thin soil

Some of the land in that region is so wet and hot and covered with jungle that a few people live there.

The top of the mountain covered with snow during winter

The medical science began with the Greek Hippocrates, who earned for himself the title of father of Medicine

Chemical engineering is based on the principles of physics, chemists, and mathematics.

The professor is thinking to go to the conference on conservation next month.

Runner Wilma Rudolf win three gold medals at the 1960 Olympics, and she set the world record for the 100 – meter dash in 1961

A pharmacist’s ethical standards have to be high because he is entrusted to the storage and distribution of  dangerous drugs

In spite modern medical technology, many diseases caused by viruses are still not curable.

Dinosaurs are traditionally classified as cold-blooded reptiles, but recent evidence based on eating habits, posture, and skeletal structural suggests some may have been warm-blooded

I'll offer it to Tom _______, he may not want it.

He was so careless that he left the work half doing and went to the cinema.

We decided not to go out for a meal_______ we were simply too tired.

The  modern American dictionary is typically a single compact volume published with a modest price.

___ hard he worked, he could earn enough money to support the family.

It is becoming extremely difficult to grow enough to feed the world’s rapidly increased population

I’m trying to save up for a trip to Canada, so I can’t afford buying much at the moment.

The biologist found some pollutants, a little of which can be considered very harmful to fish and other living organisms in the river.

Mumps are a very common disease which usually affects young children.

She promised that she would come, but in fact she doesn’t.