Посмотри на картинки . 4b на с. 29-30 учебника (ч. 2) и сравни их.

1. the portrait was painted _in__ oil. 2. yesterday ann was dressed __in_ white. 3. he felt at that moment he was _in__ love with the whole world. 4. they searched everywhere, but it was __in_ vain. 5. __in_ his opinion it was too late to publish this article. 6. the doctor advised her not to sit __in_ the sun so long. 7. everybody knew that helen was __in_ love with bob. 8. he liked to run __in_ the open air every spring. 9. she is interested __in_ some collections of minerals. 10. they always keep everything __in_ secret from the others. 11. he is __in_ need of money. can you lend him some? 12. __in_ their opinion i am a fool to help you. 13. he tried to lift the heavy log, but it was __in_ vain. 14. ann did not know what to do _in__ these circumstances. 15. they are interested _in__ these problems. 16. he has no interest __in_ music. 17. _in__ fact we did this work ourselves. 18. they stood _in__ the sun too long. the sun was pitiless _in__ the heat.