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This (1).....a..... to me three years ago. It was my fifteenth birthday and I was having a party. I (2) ....... for that day for weeks! I had invited all my friends, even people I (3)........ for a very long time. I (4)........... everything by six o'clock. My friends started coming at seven.
Everyone (5).......... by half past seven and it was time to bring out my birthday cake. My guests all stood around the table and I went into the kitchen to get the cake. As I (6).......... it, I (7)........... over my little brother's toy train and fell. The cake landed on my face and I (8).......... on the floor, covered in cream and strawberries! My friends thought it was funny. They (9)............ all night.
I (10).............. so embarrassed in my life!

1) a) happened b) has happened c) was happening d) had happened
2) a) have waited b) had been waiting c) was waiting d) waited
3) a) didn't see b) haven't seen c) wasn't seeing d) hadn't seen
4) a) prepared b) have prepared c) had prepared d) had been preparing
5) a) was arriving b) had been arriving c) had arrived d) would arrive
6) a) carried b) was carrying c) had carried d) had been carrying
7) a) tripped b) was tripping c) have tripped d) had tripped
8) a) have lain b) had lain c) lay d) used to lie
9) a) have laughed b) would laugh c) laughed d) used to laugh
10) a) never felt b) have never felt c) was never feeling d) had never been feeling