Complete the sentences.Use For,since,all day
1)The boys are tried.They have been playing basketball....an hour and a half.
2) Alex has been talking on the phone ... 5 o'clock
3)The telephone has been ringing....
4)Mr Williams has been writing his book... half a year and he hasn't finished it yet
5)People have been working on this problem...the beginning of the century
6) John has been washing his car...nine o'clock this moning
7)Sarah has been writing her project...
8)We have learning the poem...an hour and a half

1 for

2 since

3 all day

4 for

5 since

6 since

7 all day

8 for