Supply the missing words(of, from, in or on) without referring to the above lists as far as possible.
30. We have embarked......... a nè scheme.
31. I believe ........taking my time.
32. Jones was dismissed........the firm.
33. They began by experimenting ........rats.
34. Please concentrate.......what you are đồng
35. She prides herself........her clean house.
36. The climber failed.......his attempt to reach the summit.
37. Many people escaped.......prison camps during the last war.
38. We must economize.......fuel.
39. He's never done any work. He lives......his mother.
40. He was employed ...... a factory before he joined the army .
41. And what does this delightful drink consist.......?
42. I shall certainly act.......... your advice.
43. Don't write.........the desk!
44. You should not boast........ your success.
45. You must encourage him........his efforts.
30-on
31-from
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41-in
42-in
43-on
44-in
45-in
30-on
31-from
32-on
34-of
35-on
36-of
37-from
38-on
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40-from
41-of
42-on
43-on
41-in
42-in
43-on
44-in
45-in