III. Complete these sentences with the correct forms of the verbs in brackets.
A: Hi. I (not/see) you since the meeting in Singapore.
B: That’s right. But I (change) companies since then.
A: Really? (not/be) it Clipco you were working for?
B: That’s right but I (work) for GGR now. It’s still the same kind of job but it’s nice to have a change.
A: I (know) what you mean. GGR? I (not/hear) of them.
B: No, we (be) a small company but our business (grow) and I think they (have) lots of good ideas. And you?

A: Hi. I haven't seen you since the meeting in Singapore.
B: That's right. But I have changed companies since then.
A: Really? Wasn't it Clipco you were working for?
B: That's right, but I am working for GGR now. It's still the same kind of job but it's nice to have a change.
A: I know what you mean. GGR? I haven't heard of them.
B: No, we are a small company but our business is growing and I think they have lots of good ideas. And you?

Explanation:
In this conversation, the verb forms in brackets need to be completed with the correct tense. Let's go through each sentence:

- A: Hi. I (not/see) you since the meeting in Singapore.
In this sentence, we need to use the past simple tense of the verb "see". The correct form is "haven't seen", which indicates that the speaker has not seen the person since the meeting in Singapore.

- B: That's right. But I (change) companies since then.
In this sentence, we need to use the present perfect tense of the verb "change". The correct form is "have changed", which indicates that the speaker has changed companies since then.

- A: Really? (not/be) it Clipco you were working for?
In this sentence, we need to use the past simple tense of the verb "be". The correct form is "wasn't", which indicates that Clipco was not the company the person was working for.

- B: That's right but I (work) for GGR now. It's still the same kind of job but it's nice to have a change.
In this sentence, we need to use the present continuous tense of the verb "work". The correct form is "am working", which indicates that the person is currently working for GGR.

- A: I (know) what you mean. GGR? I (not/hear) of them.
In this sentence, we need to use the present perfect tense of the verb "know" and the past simple tense of the verb "hear". The correct forms are "have heard" and "haven't heard", which indicate that the speaker has not heard of GGR.

- B: No, we (be) a small company but our business (grow) and I think they (have) lots of good ideas. And you?
In this sentence, we need to use the present simple tense for the verbs "be" and "grow", and the present continuous tense for the verb "have". The correct forms are "are", "grows", and "are having", which indicate that their business is currently growing and they currently have lots of good ideas.