Native English Speaker, can you just help me about the grammar work?

Decide whether the verbs should be in the past tense or in the present perfect tense by writing the correct form in the space bet. line. Also fill out the blankc with for, sine or ago.
Two old friends meet at a pary and start talking:
A: What a long time! Just thing---we (not see) each other __ 12 yrs. Have you seen Alma?
B: No, I (not see) her __ 12 yrs either.
A: Oh, I (meet) her by chance at a party 2 or 3 years __, but I (not see) her __. I see Joey sometimes, though. He (live) near here __ the last years. I (see) him a week __ at a meeting.
B: I (not see) him __ I left the area. I used to see Kris. She and I (work) together __ 2 yrs, but she (leave) 18 months __ and I (not see) her __.
___
Half of the hamsters (was, were) rejected by their mother.
To and from in their narrow cage (paces, pace) the lions.
Some of the bananas (has, have)...

A: What a long time! Just thing---we haven't seen each other for 12 yrs. Have you seen Alma?
B: No, I haven't seen her for 12 yrs either.
A: Oh, I saw her by chance at a party 2 or 3 years ago, but I haven't seen her since. I see Joey sometimes, though. He lives near here for the last years. I saw him a week ago at a meeting.
B: I haven't seen him since I left the area. I used to see Kris. She and I worked together for 2 yrs, but she left 18 months ago and I haven't seen her since.
___
Half of the hamsters were rejected by their mother.
To and from in their narrow cage pace the lions.
Some of the bananas have...

too involved,be more succinct!

A: HAVE NOT SEEN each other FOR 12 years
B:HAVE NOT SEEN her FOR 12 years
A:I met her by chance at a party 2 or 3 years AGO, but I HAVE NOT SEEN her SINCE. I see Joey though. He LIVED here FOR the last years. I SAW him a week AGO at a meeting.
B: I HAVE NOT SEEN him SINCE I left the area. I used to see Kris. She and I WORKED together FOR 2 yrs, but she LEFT 18 months AGO and I HAVE NOT SEEN her SINCE.
_________________________________
were
pace
have

Two old friends meet at a party and start talking:
A: What a long time! Just think,we have not seen each other for 12 yrs. Have you seen Alma?
B: No, I have not seen her for 2 yrs either.
A: Oh, I met her by chance at a party 2 or 3 years ago, but I have not seen her since . I see Joey sometimes, though. He has lived near here for the last years. I saw him a week ago at a meeting.
B: I have not seen him since I left the area. I used to see Kris. She and I worked together for 2 yrs, but she left 18 months ago and I have not seen her since.
___
Half of the hamsters were rejected by their mother.
To and fro in their narrow cages the lions pace.
Some of the bananas have ...