1) Have you ever eaten a frog?
2) Where have you been ?
3) I have never spoken to hum since we quarreled
4) Have you ever ridden a Honda motorbike?
5) How long have you known your best friend?
6) The show has just begun
7) We have missed the last train
8) How much money have you spent so far?
9) Has Mary phoned yet?
10) It hasn`t rained here for three years
11) Why haven`t you brought your ...?
12) My dog has never bitten any one
