ESL-EFL Test - 101

Quizzes, tests, exercises and puzzles for English as a Second Language (ESL), English as a foreign language (EFL), Teaching EFL (TEFL), Test of EFL (TOEFL), English for speakers of other languages (ESOL), Teaching ESOL (TESOL), TOEIC.


1. I'm going to wait a bit longer ________ she rings.


2. ________ to me like that again!


3. I get up ___ 7am.


4. ________ they're late again, I'll be furious.


5. Call me ________ any emergency.



6. He told me he ___ be here by three o'clock at the latest and it's half past already.


7. It was popular ________ the 1980s.


8. I told him ________ do it.


9. ________ he gets caught, he'll go to jail.


10. She often goes out ___ Friday night.


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1. ESL-EFL Test - 102
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8. ESL-EFL Test - 109
9. ESL-EFL Test - 110
10. ESL-EFL Test - 111
11. ESL-EFL Test - 112
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19. ESL-EFL Test - 120
20. ESL-EFL Test - 121

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Simple Science

Compound Machines

Man's Way of Helping Himself:
Out of the few simple machines mentioned in the preceding Sections has developed the complex machinery of to-day. By a combination of screw and lever, for example, we obtain the advantage due to each device, and some compound machines have been made which combine all the various kinds of simple machines, and in this way multiply their mechanical advantage many fold.

A relatively simple complex machine called the crane maybe seen almost any day on the street, or wherever heavy weights are being lifted. It is clear that a force applied to turn wheel 1 causes a slower rotation of wheel 3, and a still slower rotation of wheel 4, but as 4 rotates it winds up a chain and slowly raises Q. A very complex machine is that seen in Figure .

FIG. - A simple derrick for raising weights.

FIG. - A traveling crane.

FIG. - A farm engine putting in a crop.

Centre and Middle - Centre

Don't Say:
Stand in the middle of the circle.

Say:
Stand in the centre of the circle.
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