Помогите пожалуйста, желательно с объяснением (:
Put the verbs inbrackets into the correct form.

1)We always...(wake) up early.
2)The moon...(move) round the Earth.
3)If she...(have) time next evening she...(go) shopping.
4)They...(stay) at home tomorrow if it...(snow).
5)Last winter we often...(ski) in the fields.
6)Yesterday John...(run) into the house, ...(lock) the door and...(hide) under the bed.
7)What...(you\do) now? -I...(watch) TV.
8)Helen can't answer the telephone: she...(wash) up.
9)At 4 o'clock yesterday they...(ride) their bikes.
10)It...(rain) all day long last Sunday.
11)I...(walk) in the garden from 3 till 5 o'clock yesterday.
12)Last evening we...(play) football when a thunderstorm...(begin).
13)Yesterday Jane...(do) the shopping while I...(clean) the room.
14)At six o'clock tomorrow he...(work) on the computer.
15)This time next week L...(swim) in the sea.