He organised the first package .tour. in history.

He charged me $10 for the repairs.

The bank has been held .in. twice this year.

Children should be warned .about. the dangers of drugs.

Children should be warned about the dangers of drugs.

Thomas Cook (1808-1892) is .widely .. considered to be the father of modern mass tourism.

without

Fill in the blank with one appropriate preposition to complete the following sentence :

What a pity! We left him without saying goodbye.

Although people love festivals very much, there are also some disadvantages. First, festivals are very costly. Because the general purpose of festivals is to (31) __preserve__ cultural heritages, a nation is willing to spend a lot of money on this. Moreover, during a festival, most people do not work but spend money on (32)_____expensive______ gifts for their friends and relatives. 

Second, festivals can be dangerous. People may drink a lot during a festival and cause road (33)___accidents_____. In many festivals, there are races like cow-racing and elephant racing which may be (34)_____dangerous______,  especially for children. Moreover, in some festivals, when people rush to see the events, they may also (35)____make______ other people to get hurt. Third, festivals may affect the environment. After a festival, the roads are full of colorful paper, flowers, (36)____waste________ cans or bottles that people throw away. Trees along the roadsides may be damaged by the (37)__crowds___­­­_______ . Furthermore, the noise from music and other (38)____performances_____ also cause noise pollution

31. preserve

32. expensive

33. accidents

34. dangerous

35. make

36. waste

37. crowds

38. perfomances

preserve

expensive

accidents

dangerous

make

waste

crowds

performances

Fill in the blank with one appropriate preposition to complete the following sentence :

I'm very grateful to you for your invaluable help.

Fill in the blank with one appropriate preposition to complete the following sentence :

I'm very grateful ..to. you .for.. your invaluable help.

Fill in the blank with one appropriate preposition to complete the following sentence :

Clean air provides us with a healthy supply of oxygen.

Cấu trúc: provide s.o with sth.