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Anh văn bằng B-007
1) They have been raising horses and cows on their farm
___ many years.
a) after
b) for
c) since
d)
2) John and Bob have been working on this project ___
five months already.
a) after
b) for
c) since
d)
3) I haven't seen him ___ a long time ago.
a) after
b) for
c) since
d)
4) She's been sick ___ yesterday.
a) after
b) for
c) since
d)
5) He's been working in the field ___ early this morning.
a) after
b) for
c) since