I couldn't read the e-mail because .....
I didn't recognize my friend because .....
I couldn't eat the steak because .....
I couldn't find my flash drive because .....
I didn't wake up on time because .....
I wanted to watch the film because .....
..... the chef hadn't cooked it enough.
..... she had put on a lot of weight.
..... I hadn't brought my glasses.
..... because I had forgotten to set the alarm.
..... somebody had stolen it.
..... I had seen great reviews about it.