He ________ his homework at 9 o’clock yesterday .A. does B. was doing C. did
—Where are Jane and her parents?—They _____ Japan.
-----I am going to have a test next week.-----__________!
There were _________ doctors, so Dr Norman Bethune had to work on his own.
My little brother caught a cold, ________ he didn’t wear warm clothes yesterday.
I couldn’t work out this problem ________ my teacher helped me.