=> They water and take great care of the trees during the first month.
21.A. They water and take great care in the trees during first month.
B. They water and take great care of trees during first month.
C. They water and take great care the trees during first month
D. They water and take great care of the trees during the first month.
22. they/ carry/ recycled bags /put/ rubbish/ in.
A. They carry recycled bags put the rubbish.
B. They carry recycled bags to put rubbish in.
C. They carry recycled bags to put the rubbish in.
D. They carry recycled bags put the rubbish .
23. community organise/ activity/ once a month.
A. Community organises activity once a month.
B. The community organises this activity once a month.
C. The community organises activity once a month.
D. Community organise this activity once a month.
21 D
22 B
23 B
21. B
22. C
23. B