Ответ:
1) We play (to play) football every day.
2) He visited (to visit) his Granny yesterday.
3) I have never been (never, to be) to London.
4) I have been reading (to read) since morning.
5) They had done (to do) their homework by 5 o'clock yesterday.
6) She will have helped (to help) her mother by 5 o'clock tomorrow.
7) We will go (to go) to school tomorrow.
8) I am doing (to do) my homework now.
9) She was reading (to read) when I came.
10) I was washing up (to wash up) at 6 o'clock yesterday.
11) She had been playing (to play) tennis for 1 hour when I came.
12) He will have been working (to work) for 1 hour when she comes.