21, She was playing the piano when our guests arrived last night

22, He will come and see you soon

23, I will come as soon as I have finished my work. Are you ready?

24, My mother will come to stay with us next weekend

25, Where will you spend your holidays next summer?

26, Violets bloom in spring

27, We have not lived in England for two years now

28, I will never forget what you have just told me

29, They are preparing the Christmas dinner at the moment

30, When I last stayed in Cairo, I rode to the Pyramids on a camel that my friend had borrowed the day before

21, She (play) __was playing_______ the piano when our guests (arrive) _____arrived_____ last night
22, He (come) _______will come__ and (see) __see_____ you soon
23, I (come) __will come_______ as soon as I have finished my work. Are  you  ________ ready?

24, My mother (come)____will come_____ to stay with us next weekend
25, Where will you (spend) ____spend_____ your holidays next summer?
26, Violets (bloom) ____bloom______ in spring
27, We (not live) _haven't lived_________ in England for two years now
28, I (never forget)___will never forget__________ what you (just tell) _____have just told_____ me
29, They (prepare) __are preparing_______ the Christmas dinner at the moment
30, When I last (stay) ___stayed______ in Cairo, I (ride) ___rode_____ to the Pyramids on a camel that my friend (borrow)____have borrowed_____ the day before