What we did is ... a letter to apologise.
write
writing
to write
wrote
Jim walked the dog last night. (It was ...)
the dog that Jim walked last night.
Which sentence is INCORRECT?
What he did to pay the mortgage is sell his car.
The reason why he sold his new car was to pay the mortgage.
Paying the mortgage is why he sold his new car.
It was to pay the mortgage that he sold his new car.
The reason why he left ... the embarrassment.
has to avoid
avoinding
is to avoid
was to avoid
...about the place is the weather.
That I don't like
What I don't like
The reason I don't like
Zak is reading a book before bedtime. (It was)
Zak who was reading a book before bedtime.
Which sentence is INCORRECT?
All we play is music from the 70's.
Music from the 70's is we play.
It's music from the 70's that we play.
What we play is music from the 70's.
... who lent him the money.
Mary was
Mary
It was Mary