He (sleep) [?] when his mother (come) [?] home.
My sister (watch) [?] TV when she (fall) [?] asleep.
When the monster (appear) , they (fish) [?] in the lake.
When she (finish) her homework, she (go) out.
When they (see) her, she [?] a book.
She (break) her arm while she (play) [?] volleyball.
We (lie) [?] on the beach when we (hear) [?] a scream.
My friend (knock) on the door while I (have) [?] a bath.
They (have) [?] breakfast when their parents (come) .
She (scream) when she (see) the burglar.