1. Bell worked with deaf-mutesat Boston University.

2. They first introduced the device in 1876.

3. The first telephone message was that: "Mr. Watson, come here. I want you"

4. The first telephone was in commercial use in 1877.

1. No, they don't. Learners learn words in different ways.

2. Some learners write the example sentences with new words because they want to remember how to use the words in the right way.

3. In order to remember words better, some learners write each word and its use on a small piece of paper and stick it some where in their house so as to learn it at any time.

4. In order to remember important words, learners usually underline or highlight only the words they want to learn.

1. No, it isn't. It is very different from the present shopping area.

2. The new shopping mall is special about that all the shops are under one roof (which will be convenient, especially during the hot and humid summer month).

3. The small store owners think that the new shopping mall will take their business.

4. The stores in the mall will offer a wider selection of products, some at cheaper prices than the ones in the small shops