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1) He already (to do) his homework for half an hour, but he (not to do) half of it yet.

2) What you (to do) when they (to call) you yesterday?
3) Granny (to clean) the flat, before her children returned.
4) Jim (to wash) the dishes by 8 o'clock yesterday and at 8 (to walk) with his dog.
5) Alice (to sleep) still. She already (to sleep) for two hours.
6) Mary (to write) a letter at five o'clock yesterday.
7) Everybody (to be) at the theatre, but my cousin (not to come) yet.
8) While they (to watch) a new TV show, they (to eat) popcorn and (to drink) lemonade.
9) If you (to want) I (to give) you my bike tomorrow.
10) Your daughter already (to return) from London?
11) Sophie (to ski) at seven o'clock yesterday.
12) When morning came, the storm already (to stop), but the snow still (to fall).
13) Poly (to return) from the cinema by 10 o'clock yesterday.
14) Stacy (to learn) three poems by heart by 9 o'clock and at 10 she (to play) chess.
15) Where your gloves (to be)? - I (to put) them into my bag.
16) Jane’s sister (to bake) pancakes since 11 o'clock and she already (to bake) 20.
17) While Barbara (to skate), her friend (to sledge).
18) If she (to wait) mum (to buy) her a new computer.
19) You (to meet) my friends recently?
20) We (not to eat) ice-cream at 12 o'clock yesterday.