Provide the correct forms of the verbs in brackets, using the past simple or the past continuous.

a. While I (surf) the Internet, I (come) across a job advertisement.

b. My sister (work) on an art project when her friend (call).

c. My mother (prepare) dinner when someone (knock) at the door.

d. While we (talk) about the project, Ben (come) up with an interesting idea.

e. We (meet) an old friend while we (deliver) free meals to poor families.

Complete the sentences using the correct form of the words in brackets.

a. Thanks to generous from local businesses, we are now able to build houses for poor people. (donate)

b. If your application is successful, you will be trained by our volunteers. (experience)

c. We are looking for , dedicated volunteers to work at our Greenleaf Child Center. (rely)

d. Head Start is an educational program for disadvantaged children. (mental)