28) I suddenly remembered that I (forget) .......................... my keys. 29) While Diana (watch) ............... her favourite TV programme, there (be) .............. a power cut. 30) Who (drive) .......................... the car at the time of the accident? 31) By the time Sheila (get) .................. back, Chris (go) .......................... home. 32) David (eat) ..................... Japanese food before, so he (know) ........................... what to order. 33) I (do) .......................... some shopping yesterday, when I (see) .......................... your friend. 34) What .......... you (do)...................... when I (come) ........................... to your office yesterday? 35) Laura (miss) .......................... the party because no one (tell) ............................... her about it.

28) I suddenly remembered that I (forget) .............had forgotten............. my keys.
29) While Diana (watch) ......was watching......... her favourite TV programme, there (be) ......was........ a power cut.

30) Who (drive) ............drove.............. the car at the time of the accident?

31) By the time Sheila (get) .......got........... back, Chris (go) ...........had gone............... home.

32) David (eat) ........had eaten............. Japanese food before, so he (know) ............knew............... what to order.

33) I (do) .............war doing............. some shopping yesterday, when I (see) ...........saw............... your friend.

34) What ....were...... you (do)............doing.......... when I (come) ...............came............ to your office yesterday?

35) Laura (miss) ............missed.............. the party because no one (tell) ..............had told................. her about it.