The big fire wasn’t put out __________ twelve o’clock last night. A. when B. if C. until
Oxfam Trailwalker on November 5th every year.
Tom has much difficulty _____Chinese so he often asks me ______help.
Usually before exams, the students ____two minutes to write down their names.
Some of the young men learn English________ to the radio.
—Mary was heard _______ just now. What happened? —John was telling a joke.