4 Complete the sentences. Use the present perfect form of the verbs in brackets, and for or since.

1 We (have known) Aziz since 2009.

2 My grandmother (has lived) here for thirty years.

3 Have you (been) in this class for a long time?

4 My little brother (has had) a bike since September.

5 She (has not worked) in that shop since last summer.

6 They (have not seen) Jennifer for six months.

7 Mygrandfather (has worked) as a professional singer for about five decades.

8 Ruth (has not eaten) meat or fish since she was eight years old. She is a vegetarian.