31.   Many activities are available at the hotel at no extra cost, but theatre trips and excursions are not included.

32.   Most climate scientists now agree that human activity is the main cause of global warming.

33.   Once you have defined your operational indicators, the next activity is to collect data.

34.   Periodic neural activity is a normal behavior.

35.   Political theory rests on the assumption that these activities are central to the functioning of a democratic society.

36.   Religious activities are just as poorly represented, leaving aside the possible temples already described.

37.   Sales promotion activities are particularly applicable to consumer products.

38.   She soon realized that these activities were incompatible.

39.   Some activities are too expensive for poorer children to take part in.

40.   The activities are good for young learners.