Some children were seen _______in the garden all the morning. It must have been _______who picked the flowers.
#95731
A
playing; they
B
to play; they
C
playing; them
D
play; them
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Having arrived at the station, _____. 
#98250
A
it was found that the train had left
B
the train had left
C
the train was found left
D
he found that the train had left
____ to Anne's birthday party, Mr. Brown is now searching shop after shop for a nice present for her.
#89897
A
Having invited
B
Having been invited
C
Have been invited
D
Being invited