Mother told Jim to_______the milk until it boiled and then turn off the gas.
Have you really realized the part computers have_______ in the daily life?
Bob is determined to get a seat for the concert _______ it means standing in line all night for the ticket.
As is known to all language learners, the newly learnt words will soon be forgotten unless______ used in everyday communication.
The woman, when ______ how her husband was injured, began to cry.
I am afraid something terrible has _______. I won’t be able to see you tonight.