II
6 volunteer
7 gone
8 helped
9 patients
10 mountainous
16 Have - washed
17 washed - have
18 have ever eaten
19 has - gone
20 were not
21 have - done - finished
22 have not seen - arrived
23 arrested
24 did - visit
25 have cleaned
26 arrived
27 stayed
28 have lost
29 has broken
30 have not seen - saw
31 has - phoned
32 visited
33 has - won
34 went - has come
35 visited
IV
1 Our volunteer in communities makes a difference
2 I like taking part in volunteer work because I think it is useful and meaningful for society
3 We should help homeless, elderly, and abandoned children
V
I have never seen him before
I have studied English for 3 years
I last saw him when I left school
It has been raining for two days
She is the most beautiful girl I have ever seen
