a, I send her emails twice a year.
b, Suri sent a song to me through Facebook last night.
c, Bob is sending Kate a letter at the post office.
d, They send messages to each other every day.
a, Helen can look after herself every day.
b, Khanh is taking care of his baby at home.
c, They look after my house when I was...
d, Elena will take care of your son tomorrow.
