Simple past / Past perfect

Ali started singing after he (have) dinner.

Lala Chafya (sell) her house before she went abroad.

The boy (do) his homework before he watched tv.

Ali had shown me the letter before he (post) it.

He (turn) off the lights before he left the office.

They (drink) a lot of water as soon as they had arrived.

She said that she (read) that book already.

No sooner had she waken up than she (rush) out hurriedly.

Ali (lose) the money he had borrowed from me.

After she (finish) the work, she went to bed.