Ex. I. Put the words in brackets into the correct form to make an accurate description of sizes of computers. There are

There are different types of computer. The largest and most powerful are mainframe computers. Minicomputers are smaller than mainframes but are still very powerful. Microcomputers are small enough to sit on a desk. They are the most common type of computer. They are usually more powerful than minicomputers. Portable computers are smaller than desktops. The largest portable is a laptop. Smaller portables, about the size of a piece of writing paper, are called notebook computers. Subnotebooks are smaller than notebooks. You can hold the smallest computers in one hand. They are called handheld computers or palmtop computers.