Linda was here five minutes ago. Now she's in bed. She...

1.   ?    went to bed.
2.   ?    was going to bed.
3.   ?    has gone to bed.
4.   ?    had gone to bed.

The temperature was 25 degrees. Now it is only 17. The temperature...

1.   ?    had fallen.
2.   ?    fell.
3.   ?    falls.
4.   ?    has fallen.

The light was off. Now it is on. Somebody...

1.   ?    turns it on.
2.   ?    has to turned it on.
3.   ?    was turning it on.
4.   ?    must turn it on.

Tom was 5' 2". Now he is 5' 5". He...

1.   ?    has grown taller.
2.   ?    had grown taller.
3.   ?    have grown taller.
4.   ?    grew taller.

I had my book with me yesterday. Now I don't know where it is. I...

1.   ?    am losing it.
2.   ?    have losted it.
3.   ?    has lost it.
4.   ?    have lost it.

They have known each other...

1.   ?    since a long time.
2.   ?    a long time ago.
3.   ?    for a long time.
4.   ?    a long time.

I have not seen Marry...

1.   ?    since Monday.
2.   ?    until Monday.
3.   ?    on Monday.
4.   ?    for Monday.

...to play tennis since I broke my arm.

1.   ?    I was not able
2.   ?    I had not been able
3.   ?    I was not being able
4.   ?    I have not been able

...three letters last Sunday.

1.   ?    I wrote
2.   ?    I have written
3.   ?    I was writing
4.   ?    I will write

Since I have been a student,

1.   ?    I do not fail any exam.
2.   ?    I have not failed any exam.
3.   ?    I will not fail any exam.
4.   ?    I would not fail any exam.