Respuesta:
a. They (read) were reading a book when he came in.
b. The sun (shine) was shining when he went out.
c. When you came in I (write) was writing .
d. I came in while he (write) was writing.
e. It (rain) was raining this morning when I got up.
f. We (work) were working all day yesterday.
g. When I arrived at his house he still (sleep) was sleeping.
h. The boy jumped off the tram while it (move) was moving.
i. The fire still (burn) was burning at six o’clock this morning.
j. He (walk) was walking across the bridge when his hat blew off.
