Supply the correct tense for the verbs in brackets
1) I suddenly remembered that I (forget) ..............my keys. 2) While Diana (watch) .............her favorite TV program, there (be) ......a power cut. 3) Who (drive) .................... the car at the time of the accident? 4) David (eat) ............. Japanese food before, so he (know) ................. what to order. 5) I (do) ............... some shopping yesterday, when I (see) ....................... your friend. 6) What .............. you (do).......... when I (come) .................. to your office yesterday? 7) Laura (miss) ............ the party because of no one (tell) ......................... her about it. 8) If someone (walk)...................... in here with a gun, I would be very frightened. 9) I’m sure he (understand) ...................... if you explain the situation to her. 10) If she hadn’t walked to the meeting, she (not be).................. late. 11) He always (complain) ........................ if I’m late. 12) If he spoke more clearly, we (understand) ................................... him. 13) If the woman (say) ............ what she wanted, I wouldn’t have put the phone down. 14) If they arrived in time, they (see) ..................... the ceremony. 15) If you (ask)........................ me, I would explain it to you.