НУЖНООООО Подчеркните в каждом из них модальный глагол или его эквивалент.
1). This instrument can be used to measure a number of different electrical quantities, such as voltage, current and resistance.
2). He had to study the theory of interplanetary travel.
3). We can determine the pressure of our atmosphere with the help of a barometer.

1) can

2) had to

3) can

это все модальные глаголы походу другие не вижу

we are reading a sci-fi story about aliens these days.

1. who is reading a sci-fi story?

2. are we reading a sci-fi story?

3. what are we reading?

4. when are we reading a sci-fi story?

5. what story are we reading?

6. what is the story about?

7. is the story about aliens or about animals?

8. we are reading a sci-fi story about aliens, aren't we?

      i need a part-time job to earn some money, i have read some  advertisements, and i  decided  to chose a  baby-sitter  job. 

      first of all i like kids so much. i can play with the all day. i  always  wanted to have a lot of  younger brothers and sisters.

          second - the family offers a good money for this job. that is important for me too.

at last, but not at least they sad, that they would take me to the cruise with them this summer, so i could help them with their kids there. what could be better then that?